Don't lint on interior mutable const item coming from derefs

[Urgau]

This PR fixes the const_item_interior_mutations lint so we don't lint on interior mutable const item coming from derefs.

Fixes #150157

[rustbot]

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[Kivooeo]

r? me

[Kivooeo]

@bors try @rust-timer queue

[rust-bors]

☀️ Try build successful (CI)
Build commit: 2ac72c4 (2ac72c46c0316e5594ee1deb47ea790d69c07819, parent: b889870082dd0b0e3594bbfbebb4545d54710829)

[rust-timer]

Finished benchmarking commit (2ac72c4): comparison URL.

Overall result: no relevant changes - no action needed

Benchmarking this pull request means it may be perf-sensitive – we'll automatically label it not fit for rolling up. You can override this, but we strongly advise not to, due to possible changes in compiler perf.

@bors rollup=never
@rustbot label: -S-waiting-on-perf -perf-regression

Instruction count

This benchmark run did not return any relevant results for this metric.

Max RSS (memory usage)

Results (primary -2.6%, secondary 0.2%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	1.4%	[1.4%, 1.4%]	1
Improvements ✅ (primary)	-2.6%	[-2.8%, -2.3%]	2
Improvements ✅ (secondary)	-1.0%	[-1.0%, -1.0%]	1
All ❌✅ (primary)	-2.6%	[-2.8%, -2.3%]	2

Cycles

Results (primary 4.2%, secondary 5.7%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

	mean	range	count
Regressions ❌ (primary)	4.2%	[2.0%, 15.3%]	22
Regressions ❌ (secondary)	5.7%	[1.9%, 20.8%]	21
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	4.2%	[2.0%, 15.3%]	22

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 479.396s -> 479.351s (-0.01%)
Artifact size: 390.52 MiB -> 390.57 MiB (0.01%)