Set PHP-specific injection package size ratchet

[lloeki]

Description

Due to a change PHP-side libdatadog was bumped to v29. This version bump caused PHP images to blow past their previous limit.

Simultaneously, changes to the datadog-package binary were picked up. Notably the github.com/klauspost/compress/zstd dependency was bumped from 1.17.4 to 1.18.1. This bump included in 1.17.5 a default value change for the compression context size, downscaled from 32MB to 8MB (fixing compatibility with browsers like Chrome), causing drastic changes in compression results.

Unbeknownst to the second change, PHP therefore updated the global limits, attributing the size change to the libdatadog bump (which was true, but not for the whole of it):

• Container image limit changed from 190MB to 250MB
• OCI package limit changed from 130MB to 160MB

This allowed a change to slip through to other languages, where the new datadog-package binary caused regressions in package size without change to the inputs. Due to the wildly differing sizes of packages across languages the regression is silent, rendering the size threshold ratchet moot.

To combat such silently creeping regressions, this PR introduces language-specific thresholds for the ratchet through one pipeline overrides

Note: datadog-package was fixed in https://github.com/DataDog/datadog-packages/pull/64 which may take some time to trickle down.

Reviewer checklist

• Test coverage seems ok.
• Appropriate labels assigned.

[datadog-official]

⚠️ Tests

✨ Fix all issues with BitsAI or with Cursor

⚠️ Warnings

🧪 1 Test failed

❄️ Known flaky: testAsyncWithTracerDisabledOnConsume from symfony-latest-test.DDTrace\Tests\Integrations\Symfony\Latest\MessengerTest     (Fix with Cursor)

DDTrace\Tests\Integrations\Symfony\Latest\MessengerTest::testAsyncWithTracerDisabledOnConsume
Command failed with exit code 1. Output: 
 [OK] Consuming messages from transport "async".

 // The worker will automatically exit once it has processed 1 messages or
 // received a stop signal via the messenger:stop-workers command.

 // Quit the worker with CONTROL-C.

 // Re-run the command with a -vv option to see logs about consumed messages.
...

ℹ️ Info

No other issues found (see more)

❄️ No new flaky tests detected

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