feat: Add codeaction and widget to succes_if_fail_with_msg tactic

[edegeltje]

make the success_if_fail_with_msg tactic give a codeaction when the tactics given fail with a different error, to update the expected error message.

example:

example : Nat → Nat → True := by
  success_if_fail_with_msg "no goals" -- Update with tactic error message: "no goals to be solved"
    intro
    intro
    trivial
    trivial
  intros; trivial

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[github-actions]

PR summary 2c2995bcc2

Import changes exceeding 2%

%	File
+5.00%	Mathlib.Tactic.SuccessIfFailWithMsg

Import changes for modified files

Dependency changes

File	Base Count	Head Count	Change
Mathlib.Tactic.SuccessIfFailWithMsg	20	21	+1 (+5.00%)

Import changes for all files

Files	Import difference
Mathlib.Tactic.SuccessIfFailWithMsg	1

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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/declarations_diff.sh <optional_commit>

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

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

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No changes to technical debt.

You can run this locally as

./scripts/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).

[kim-em]

Please add the example from the PR description as a new test.

[kim-em]

The large-import label is fine to ignore for this PR.