[WIP] Fix panic in formatting chained method call

[Copilot]

• Understand the issue: panic when formatting chained method calls with comments
• Create a test case that reproduces the panic
• Compare with TypeScript source to identify the fix
• Fix the getIndentationForComment function to handle -1 (Unknown) indentation
• Verify the test passes
• Run format test suite to ensure no regressions
• Run full test suite to ensure no broader regressions

Original prompt

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This section details on the original issue you should resolve

<issue_title>Panic formatting chained method call</issue_title>
<issue_description>## Stack trace

panic handling request textDocument/formatting strings: negative Repeat count goroutine 473 [running]:
runtime/debug.Stack()
	runtime/debug/stack.go:26 +0x64
github.com/microsoft/typescript-go/internal/lsp.(*Server).recover(0x14000000f00, 0x14001b29110)
	github.com/microsoft/typescript-go/internal/lsp/server.go:539 +0x44
panic({0x10323fae0?, 0x103455c10?})
	runtime/panic.go:783 +0x120
strings.Repeat({0x1031b4db8?, 0x140030cf970?}, 0x14001b64a98?)
	strings/strings.go:628 +0x574
github.com/microsoft/typescript-go/internal/format.getIndentationString(0xffffffffffffffff, 0x102c74d04?)
	github.com/microsoft/typescript-go/internal/format/span.go:976 +0x54
github.com/microsoft/typescript-go/internal/format.(*formatSpanWorker).insertIndentation(0x140006beff0, 0xd, 0xffffffffffffffff, 0x0)
	github.com/microsoft/typescript-go/internal/format/span.go:859 +0x3c
github.com/microsoft/typescript-go/internal/format.(*formatSpanWorker).consumeTokenAndAdvanceScanner.func1({{0x2a34570?, 0x140?}, 0x2?})
	github.com/microsoft/typescript-go/internal/format/span.go:1059 +0x2c
github.com/microsoft/typescript-go/internal/format.(*formatSpanWorker).indentTriviaItems(0x140006beff0, {0x1400239d2f0?, 0x1d?, 0x1400017f398?}, 0xffffffffffffffff, 0x98?, 0x14001b64ba0)
	github.com/microsoft/typescript-go/internal/format/span.go:900 +0x94
github.com/microsoft/typescript-go/internal/format.(*formatSpanWorker).consumeTokenAndAdvanceScanner(0x140006beff0, {{0x1400239d2f0, 0x4, 0x4}, {{0x1f, 0x20}, 0x18}, {0x0, 0x0, 0x0}}, ...)
	github.com/microsoft/typescript-go/internal/format/span.go:1058 +0x2d4
github.com/microsoft/typescript-go/internal/format.(*formatSpanWorker).processChildNode(0x140006beff0, 0x1400017f398, 0x14002361af0?, 0x1400032a9c0?, 0x14003394dd8?, 0x140006127e0, 0xffffffffffffffff, 0x1400017f398, 0x14002a34570, 0x0, ...)
	github.com/microsoft/typescript-go/internal/format/span.go:389 +0x2d4
github.com/microsoft/typescript-go/internal/format.(*formatSpanWorker).execute.func1(0x140006127e0)
	github.com/microsoft/typescript-go/internal/format/span.go:230 +0x54
github.com/microsoft/typescript-go/internal/ast.(*NodeVisitor).VisitNode(0x14003394f38?, 0x2f51b60?)
	github.com/microsoft/typescript-go/internal/ast/visitor.go:51 +0x30
github.com/microsoft/typescript-go/internal/ast.(*NodeVisitor).visitNode(0x103b5dd58?, 0x30?)
	github.com/microsoft/typescript-go/internal/ast/visitor.go:198 +0x44
github.com/microsoft/typescript-go/internal/ast.(*PropertyAccessExpression).VisitEachChild(0x1400017f398, 0x1400032aae0)
	github.com/microsoft/typescript-go/internal/ast/ast.go:6716 +0x58
github.com/microsoft/typescript-go/internal/ast.(*Node).VisitEachChild(...)
	github.com/microsoft/typescript-go/internal/ast/ast.go:245
github.com/microsoft/typescript-go/internal/format.(*formatSpanWorker).executeProcessNodeVisitor(0x140006beff0, 0x102c74d04?, 0x14003394e98?, 0x102f3d370?, 0x0?)
	github.com/microsoft/typescript-go/internal/format/span.go:523 +0x6c
github.com/microsoft/typescript-go/internal/format.(*formatSpanWorker).processNode(0x140006beff0, 0x1400017f398, 0x140006d0f08, 0x0, 0x0, 0xffffffffffffffff, 0x4)
	github.com/microsoft/typescript-go/internal/format/span.go:620 +0x120
github.com/microsoft/typescript-go/internal/format.(*formatSpanWorker).processChildNode(0x140006beff0, 0x1400017f448, 0x14000968a20?, 0x102ae925c?, 0x140033950d8?, 0x1400017f398, 0xffffffffffffffff, 0x1400017f448, 0x14002a34540, 0x0, ...)
	github.com/microsoft/typescript-go/internal/format/span.go:413 +0x5a8
github.com/microsoft/typescript-go/internal/format.(*formatSpanWorker).execute.func1(0x1400017f398)
	github.com/microsoft/typescript-go/internal/format/span.go:230 +0x54
github.com/microsoft/typescript-go/internal/ast.(*NodeVisitor).VisitNode(0x103b5dd58?, 0x2030cf8b0?)
	github.com/microsoft/typescript-go/internal/ast/visitor.go:51 +0x30
github.com/microsoft/typescript-go/internal/ast.(*NodeVisitor).visitNode(0x500000000?, 0x12ab97e80?)
	github.com/microsoft/typescript-go/internal/ast/visitor.go:198 +0x44
github.com/microsoft/typescript-go/internal/ast.(*CallExpression).VisitEachChild(0x1400017f448, 0x1400032aae0)
	github.com/microsoft/typescript-go/internal/ast/ast.go:6827 +0x30
github.com/microsoft/typescript-go/internal/ast.(*Node).VisitEachChild(...)
	github.com/microsoft/typescript-go/internal/ast/ast.go:245
github.com/microsoft/typescript-go/internal/format.(*formatSpanWorker).executeProcessNodeVisitor(0x140006beff0, 0x102c74d04?, 0x14003395228?, 0x102f3d370?, 0x0?)
	github.com/microsoft/typescript-go/internal/format/span.go:523 +0x6c
github.com/microsoft/typescript-go/internal/format.(*formatSpanWorker).processNode(0x140006beff0, 0x1400017f448, 0x140006d0f08, 0x0, 0x0, 0xffffffffffffffff, 0x4)
	github.com/microsoft/typescript-go/internal/format/span.go:620 +0x120
github.com/microsoft/typesc...

</details>

Fixes microsoft/typescript-go#1928

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[jakebailey]

Same as #1929