dillon1000/react

[Flight] Encode enclosing line/column numbers and use it to align the fake function (#33136)

Stacked on #33135.

This encodes the line/column of the enclosing function as part of the
stack traces. When that information is available.

I adjusted the fake function code generation so that the beginning of
the arrow function aligns with these as much as possible.

This ensures that when the browser tries to look up the line/column of
the enclosing function, such as for getting the function name, it gets
the right one. If we can't get the enclosing line/column, then we encode
it at the beginning of the file. This is likely to get a miss in the
source map identifiers, which means that the function name gets
extracted from the runtime name instead which is better.

Another thing where this is used is the in the Performance Track.
Ideally that would be fixed by
https://issues.chromium.org/u/1/issues/415968771 but the enclosing
information is useful for other things like the function name resolution
anyway.

We can also use this for the "View source for this element" in React
DevTools.