feat: golf using gcongr throughout the library

[hrmacbeth]

Following on from #4702 and #4784.

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[hrmacbeth]

!bench

[leanprover-bot]

Here are the benchmark results for commit 3aed923.
There were significant changes against commit bf077b1:

  Benchmark                            Metric         Change
  ==========================================================
- lint                                 wall-clock       5.3%
- ~Mathlib.Analysis.Analytic.Inverse   instructions     9.6%

[hrmacbeth]

!bench

[leanprover-bot]

Here are the benchmark results for commit 39161d1.
There were significant changes against commit bf077b1:

  Benchmark                            Metric         Change
  ==========================================================
- ~Mathlib.Analysis.Analytic.Inverse   instructions    10.1%

[hrmacbeth]

!bench

[leanprover-bot]

Here are the benchmark results for commit 2c84531.
There were no significant changes against commit bf077b1.

[hrmacbeth]

!bench

[leanprover-bot]

Here are the benchmark results for commit 3a0bde1.
The entire run failed.
Found no significant differences.

[hrmacbeth]

!bench

[leanprover-bot]

Here are the benchmark results for commit 5b38eba.
The entire run failed.
Found no significant differences.

[hrmacbeth]

!bench

[leanprover-bot]

Here are the benchmark results for commit 818206f.
There were significant changes against commit bf077b1:

  Benchmark                            Metric         Change
  ==========================================================
- ~Mathlib.Analysis.Analytic.Inverse   instructions     8.4%

[hrmacbeth]

Closing in favour of #8752.