Allow Ingest to use submit several scripts in one request without thrashing

[stu-elastic]

Ingest can use many small scripts in a single request, these may cause thrashing and trip compilation limits.

We've increased defaults for these contexts to mitigate the problem, see: #53765 but that is a workaround, not a solution.

We should figure out a way to keep the safety of compilation limits and the performance of compilation caching without thrash when a single request uses many small scripts.

[elasticmachine]

Pinging @elastic/es-core-infra (:Core/Infra/Scripting)

[stu-elastic]

Scripts are eagerly compiled and there's not compilation limits in ingest. This is no longer an issue.