chore(iast): fix for dict add inplace

[smola]

APPSEC-57605

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:

benchmarks/bm/iast_fixtures/str_methods.py                              @DataDog/asm-python
ddtrace/appsec/_iast/_ast/visitor.py                                    @DataDog/asm-python
tests/appsec/iast/aspects/test_add_inplace_aspect_fixtures.py           @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: 234 ± 3 ms.

The average import time from base is: 238 ± 4 ms.

The import time difference between this PR and base is: -3.2 ± 0.2 ms.

Import time breakdown

The following import paths have shrunk:

ddtrace.auto 2.125 ms (0.91%)

ddtrace.bootstrap.sitecustomize 1.445 ms (0.62%)

ddtrace.bootstrap.preload 1.445 ms (0.62%)

ddtrace.internal.remoteconfig.client 0.693 ms (0.30%)

ddtrace 0.680 ms (0.29%)

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-05-14 14:40:57

Comparing candidate commit b01c087 in PR branch smola/test-dict-add-inplace with baseline commit 01bb3a5 in branch main.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 523 metrics, 5 unstable metrics.