The IME fix covered the diff/file comment input and the browser annotation
overlay, but two other places where a user writes a comment still acted on
the Enter that confirms an IME candidate: the chat quote comment in the text
selection menu, and the in-place comment editor on a composer context chip.
Confirming a candidate there attached or committed the half-typed reading and
closed the input. Escape, which abandons a candidate, had the same problem.
Both handlers now return early on a composing keystroke, and a single test
asserts the guard across every comment input so the next one added does not
quietly skip it.
Bohdan Triapitsyn
e24d2b2cbd