chore(contrib): ensure core.dispatch is called with tuples

[brettlangdon]

Description

Right now we do not type check ddtrace/contrib/. There are a handful of callsites which incorrect call core.dispatch with a list instead of tuple for the arguments.

This PR adds an ast-grep rule to look for this pattern, and it fixes all the existing incorrect callsites.

Testing

Risks

Additional Notes

[chatgpt-codex-connector]

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[cit-pr-commenter-54b7da]

Codeowners resolved as

.sg/rules/core-dispatch-list-args-bare-multi.yml                        @DataDog/apm-core-python
.sg/rules/core-dispatch-list-args-bare-single.yml                       @DataDog/apm-core-python
.sg/rules/core-dispatch-list-args-multi.yml                             @DataDog/apm-core-python
.sg/rules/core-dispatch-list-args-single.yml                            @DataDog/apm-core-python
.sg/tests/__snapshots__/core-dispatch-list-args-bare-multi-snapshot.yml  @DataDog/apm-core-python
.sg/tests/__snapshots__/core-dispatch-list-args-bare-single-snapshot.yml  @DataDog/apm-core-python
.sg/tests/__snapshots__/core-dispatch-list-args-multi-snapshot.yml      @DataDog/apm-core-python
.sg/tests/__snapshots__/core-dispatch-list-args-single-snapshot.yml     @DataDog/apm-core-python
.sg/tests/core-dispatch-list-args-bare-multi-test.yml                   @DataDog/apm-core-python
.sg/tests/core-dispatch-list-args-bare-single-test.yml                  @DataDog/apm-core-python
.sg/tests/core-dispatch-list-args-multi-test.yml                        @DataDog/apm-core-python
.sg/tests/core-dispatch-list-args-single-test.yml                       @DataDog/apm-core-python

[pr-commenter]

Benchmarks

Benchmark execution time: 2026-05-07 18:38:42

Comparing candidate commit 55f4ed1 in PR branch brettlangdon/dispatch.contrib.typing with baseline commit 97ddb77 in branch main.

Found 0 performance improvements and 5 performance regressions! Performance is the same for 590 metrics, 4 unstable metrics.

scenario:iastaspects-lstrip_aspect

• 🟥 execution_time [+75.508µs; +84.577µs] or [+27.680%; +31.004%]

scenario:iastaspects-repr_aspect

• 🟥 execution_time [+52.083µs; +62.219µs] or [+16.234%; +19.393%]

scenario:iastaspectsospath-ospathbasename_aspect

• 🟥 execution_time [+92.951µs; +101.677µs] or [+21.932%; +23.991%]

scenario:span-start

• 🟥 execution_time [+1.134ms; +1.295ms] or [+7.233%; +8.255%]

scenario:telemetryaddmetric-1-count-metric-1-times

• 🟥 execution_time [+185.660ns; +225.741ns] or [+8.960%; +10.894%]