type `if (true)`, hit enter, nothing indents. same for for/while.

12aa270 commented these out to stop allman braces over-indenting
(#24976). fixed that, broke this. put them back with an optional `@end`
on the `{}` body so braced blocks stop before the brace and braceless
ones indent. same in tsx.

Fixes #60371.

Release Notes:

- Fixed TypeScript and TSX not auto-indenting the body of a braceless
`if`, `for`, or `while`

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Co-authored-by: Nathan Sobo <nathan@zed.dev>