Handle large diffs better

[tomrittervg]

[task 2024-08-07T18:33:38.856Z] [Debug] (CommandProvider perfetto job_id=535) b"Linting...\nNo lint engine configured for this project.\nRunning unit tests...\nNo unit test engine is configured for this project.\n\n\n Diff for 'third_party/perfetto/sdk/perfetto.h' with context is 7,224,879\n bytes in length. Generally, source changes should not be this large. If\n the file is not a text file, you can mark it 'binary'. Mark this file as\n 'binary' and continue? [y/N] "

[tomrittervg]

See also https://bugzilla.mozilla.org/show_bug.cgi?id=1940117