chore(iast): skip mysqlsh from ast patching

[avara1986]

Checklist

• PR author has checked that all the criteria below are met
• The PR description includes an overview of the change
• The PR description articulates the motivation for the change
• The change includes tests OR the PR description describes a testing strategy
• The PR description notes risks associated with the change, if any
• Newly-added code is easy to change
• The change follows the library release note guidelines
• The change includes or references documentation updates if necessary
• Backport labels are set (if applicable)

Reviewer Checklist

• Reviewer has checked that all the criteria below are met
• Title is accurate
• All changes are related to the pull request's stated goal
• Avoids breaking API changes
• Testing strategy adequately addresses listed risks
• Newly-added code is easy to change
• Release note makes sense to a user of the library
• If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment
• Backport labels are set in a manner that is consistent with the release branch maintenance policy

[github-actions]

CODEOWNERS have been resolved as:

ddtrace/appsec/_iast/_ast/iastpatch.c                                   @DataDog/asm-python

[github-actions]

Bootstrap import analysis

Comparison of import times between this PR and base.

Summary

The average import time from this PR is: 278 ± 3 ms.

The average import time from base is: 280 ± 3 ms.

The import time difference between this PR and base is: -2.3 ± 0.1 ms.

Import time breakdown

The following import paths have shrunk:

ddtrace.auto 2.000 ms (0.72%)

ddtrace.bootstrap.sitecustomize 1.317 ms (0.47%)

ddtrace.bootstrap.preload 1.317 ms (0.47%)

ddtrace.internal.remoteconfig.client 0.651 ms (0.23%)

ddtrace 0.683 ms (0.25%)

ddtrace.internal._unpatched 0.031 ms (0.01%)

json 0.031 ms (0.01%)

json.decoder 0.031 ms (0.01%)

re 0.031 ms (0.01%)

enum 0.031 ms (0.01%)

types 0.031 ms (0.01%)

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-07-14 20:38:01

Comparing candidate commit ea1025b in PR branch avara1986/APPSEC-58305_skip_mysqlsh with baseline commit df60cba in branch main.

Found 0 performance improvements and 3 performance regressions! Performance is the same for 341 metrics, 2 unstable metrics.

scenario:iastaspectsospath-ospathbasename_aspect

• 🟥 execution_time [+730.103ns; +833.597ns] or [+17.208%; +19.647%]

scenario:iastaspectsospath-ospathsplit_aspect

• 🟥 execution_time [+434.621ns; +716.443ns] or [+8.916%; +14.698%]

scenario:iastaspectsospath-ospathsplitdrive_aspect

• 🟥 execution_time [+484.306ns; +558.352ns] or [+13.188%; +15.204%]