chore(Analysis): golf Basic, Exponential, and ContinuousFunctionalCalculus/Unique

[yuanyi-350]

Split from #37987 at reviewer request.

This PR contains only the golf changes to:

• Mathlib/Analysis/CStarAlgebra/Basic.lean
• Mathlib/Analysis/CStarAlgebra/Exponential.lean
• Mathlib/Analysis/CStarAlgebra/ContinuousFunctionalCalculus/Unique.lean

Requested in: #37987 (comment)

[github-actions]

PR summary c290b55c6e

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference

---

Declarations diff

No declarations were harmed in the making of this PR! 🐙

You can run this locally as follows

## summary with just the declaration names:
./scripts/pr_summary/declarations_diff.sh <optional_commit>

## more verbose report:
./scripts/pr_summary/declarations_diff.sh long <optional_commit>

The doc-module for scripts/pr_summary/declarations_diff.sh contains some details about this script.

---

No changes to technical debt.

You can run this locally as

./scripts/reporting/technical-debt-metrics.sh pr_summary

• The relative value is the weighted sum of the differences with weight given by the inverse of the current value of the statistic.
• The absolute value is the relative value divided by the total sum of the inverses of the current values (i.e. the weighted average of the differences).

[yuanyi-350]

!bench

[leanprover-radar]

Benchmark results for 6d5d2b4 against c290b55 are in. No significant results found. @themathqueen @yuanyi-350

• ✅ build//instructions: -98.5G (-0.06%)

Small changes (1✅)

• ✅ build/module/Mathlib.Analysis.CStarAlgebra.ContinuousFunctionalCalculus.Unique//instructions: -1.8G (-2.68%)

[themathqueen]

Thanks!

maintainer merge

[github-actions]

🚀 Pull request has been placed on the maintainer queue by themathqueen.

[bryangingechen]

Thanks!
bors r+