Increase schedule retries

[Andyz26]

Context

Increasing the default schedule retries config (since the initial scheduling on batch is consolidated to honor the backoff it should be safe now to use a larger retry max to reduce jobs stuck on no resource not retrying anymore).
The follow-up work here could be to extend this to retry forever (e.g. if no resource is available for this scheduling request, keep retrying with proper backoff delay), but given the risk, I will defer this change till we gather more confidence with the new behavior.

Checklist

• ./gradlew build compiles code correctly
• Added new tests where applicable
• ./gradlew test passes all tests
• Extended README or added javadocs where applicable

[github-actions]

Test Results

614 tests  ±0   604 ✅ ±0   8m 6s ⏱️ +3s
142 suites ±0    10 💤 ±0 
142 files   ±0     0 ❌ ±0 

Results for commit 47247ad. ± Comparison against base commit 3a936bc.