Refactor existing logs and add logs

[hellolittlej]

Context

Not all scheduling constraints had enough workers available to fulfill the request
ResourceClusterActor.TaskExecutorBatchAssignmentRequest(allocationRequests=[TaskExecutorAllocationRequest(workerId=kafka-cluster-monitor-21-worker-18-168,
constraints=SchedulingConstraints(machineDefinition=MachineDefinition{cpuCores=2.0, memoryMB=14336.0, networkMbps=700.0, diskMB=65536.0, numPorts=1}, sizeName=Optional.empty,
 schedulingAttributes={jdk=17plus, jenkins_job=unknown, repo_name=corp/kafka-mantis-kafka-monitor}), jobMetadata=io.mantisrx.server.core.domain.JobMetadata@3240fd30,
stageNum=1, readyAt=-1, durationType=Perpetual)], clusterID=ClusterID(resourceID=mantisrc.kaasall),
reservation=Reservation(key=MantisResourceClusterReservationProto.ReservationKey(jobId=kafka-cluster-monitor-21, stageNumber=1),
schedulingConstraints=SchedulingConstraints(machineDefinition=MachineDefinition{cpuCores=2.0, memoryMB=14336.0, networkMbps=700.0, diskMB=65536.0, numPorts=1},
sizeName=Optional.empty, schedulingAttributes={jdk=17plus, jenkins_job=unknown, repo_name=corp/kafka-mantis-kafka-monitor}),
canonicalConstraintKey=md:2.0/14336.0/65536.0/700.0/1;size=~;attr=jdk=17plus,jenkins_job=unknown,repo_name=corp/kafka-mantis-kafka-monitor,, stageTargetSize=35,
priority=MantisResourceClusterReservationProto.ReservationPriority(type=REPLACE, tier=0, timestamp=1774746017312), createdAt=1774746017312))

currently logs are way too long to read, it basically just saying we don't have enough worker to fulfill the request that request for one single worker, and we don't need all these machineDefinition=MachineDefinition{cpuCores=2.0, memoryMB=14336.0, networkMbps=700.0, diskMB=65536.0, numPorts=1 to be part of the details.

Besides, we don't have logs to explain why we can't find the TE for the worker even though the scheduler sees there are 2 idle TE, adding logs to show details why TE not selected for the worker

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

781 tests  ±0   770 ✅ ±0   10m 11s ⏱️ +3s
162 suites ±0    11 💤 ±0 
162 files   ±0     0 ❌ ±0 

Results for commit 859c95d. ± Comparison against base commit b9bc562.

♻️ This comment has been updated with latest results.

[Andyz26]

i think you still need workerId + schedulingConstraint info

[hellolittlej]

worker id and constraint info already logged at findTaskExecutorsFor before coming into this log line.

I can put constraint again in this log line.
worker id we can't output here because it's in the array nested fields.

[Andyz26]

maybe include the reservation instance too? could make search easier