[PERF] do not normalize projection goal in add_goal

[adwinwhite]

This doesn't make much sense. I'll try to cache normalized result + stalled goals instead, in a separate cache for unnormalized projection goal.

r? @ghost

[adwinwhite]

@bors try @rust-timer queue

[rust-bors]

☀️ Try build successful (CI)
Build commit: 8d5f36a (8d5f36a42e87070d3cf15a622bdaef2b4fdb19f7)
Base parent: 07074cf (07074cfe1d991fe06b7fc613bbbd1dd9d0d37c80)

[rust-timer]

Finished benchmarking commit (8d5f36a): comparison URL.

Overall result: ❌✅ regressions and improvements - no action needed

Benchmarking means the PR may be perf-sensitive. Consider adding rollup=never if this change is not fit for rolling up.

@rustbot label: -S-waiting-on-perf -perf-regression

Instruction count

Our most reliable metric. Used to determine the overall result above. However, even this metric can be noisy.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	1.1%	[0.9%, 1.2%]	3
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-0.8%	[-1.1%, -0.3%]	4
All ❌✅ (primary)	-	-	0

Max RSS (memory usage)

Results (primary -1.9%, secondary 6.7%)

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)	6.7%	[6.7%, 6.7%]	1
Improvements ✅ (primary)	-1.9%	[-1.9%, -1.9%]	1
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-1.9%	[-1.9%, -1.9%]	1

Cycles

This perf run didn't have relevant results for this metric.

Binary size

This perf run didn't have relevant results for this metric.

Bootstrap: 489.352s -> 488.208s (-0.23%)
Artifact size: 388.43 MiB -> 388.84 MiB (0.11%)