Backport "Optimize main.js" to LTS #21096
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This Pull Request optimizes the functions used in `/docs/_spec/public/scripts/main.js`. ## Changes made: 1. `currentChapter()` function was simplified using `split()` and `pop()` instead of `lastIndexOf()` and `substring()`. 2. Used template literals for string interpolation. 3. Simplified the `heading` function by reducing repetitive code and improving readability. 4. Changed `.removeClass()` and `.addClass()` to `.toggleClass()` for toggling the class based on condition. 5. General cleanup and optimization for better readability and performance. [Cherry-picked 6d29951]
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No regressions detected in the community build up to lts-20279. |
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Backports #20093 to the LTS branch.
PR submitted by the release tooling.
[skip ci]