8244010: Simplify usages of ProcessTools.createJavaProcessBuilder in our tests

test/hotspot/jtreg/compiler/ciReplay/CiReplayBase.java

...treg/compiler/graalunit/common/GraalUnitTestLauncher.java

.../hotspot/jtreg/compiler/intrinsics/bmi/BMITestRunner.java

...jtreg/compiler/jsr292/ContinuousCallSiteTargetChange.java

...t/jtreg/compiler/jvmci/compilerToVM/GetFlagValueTest.java

...eg/compiler/linkage/TestLinkageErrorInGenerateOopMap.java

.../jtreg/compiler/loopstripmining/CheckLoopStripMining.java

test/hotspot/jtreg/gc/TestAgeOutput.java

test/hotspot/jtreg/gc/TestAllocateHeapAt.java

test/hotspot/jtreg/gc/TestAllocateHeapAtError.java

test/hotspot/jtreg/gc/TestAllocateHeapAtMultiple.java

test/hotspot/jtreg/gc/TestCardTablePageCommits.java

test/hotspot/jtreg/gc/TestNumWorkerOutput.java

test/hotspot/jtreg/gc/TestSmallHeap.java

test/hotspot/jtreg/gc/TestVerifyDuringStartup.java

test/hotspot/jtreg/gc/TestVerifySilently.java

test/hotspot/jtreg/gc/TestVerifySubSet.java

test/hotspot/jtreg/gc/arguments/GCArguments.java

.../jtreg/gc/arguments/TestG1ConcMarkStepDurationMillis.java

...tspot/jtreg/gc/arguments/TestG1ConcRefinementThreads.java