devx: nicer diff hunk headers

[koivunej]

By default git does not find a nice hunk header with rust. New(er) versions ship with a handy xfuncname pattern, so lets enable that for all developers.

Example of how this should help: rust-lang/rust@3904617

[conradludgate]

before:

after:

LGTM

[github-actions]

3151 tests run: 3030 passed, 0 failed, 121 skipped (full report)

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Flaky tests (1)

Postgres 15

• test_layer_download_cancelled_by_config_location: debug

Code coverage* (full report)

• functions: 32.7% (6987 of 21380 functions)
• lines: 50.1% (55554 of 110857 lines)

* collected from Rust tests only

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_{The comment gets automatically updated with the latest test results
a123f94 at 2024-07-24T14:25:57.513Z :recycle:}

[bayandin]

Nice!