Change a couple of TR_ASSERT into TR_ASSERT_FATAL

[mpirvu]

These asserts are on paths that are never supposed to be taken, so there is no additional overhead in executing them.

[dsouzai]

jenkins test sanity.functional xlinuxjit jdk21

[dsouzai]

Failure is known issue described here #14538

[2026-04-08T16:26:39.455Z] Testing: decomp002-OSRFV
[2026-04-08T16:26:39.455Z] Test start time: 2026/04/08 16:26:38 Coordinated Universal Time
[2026-04-08T16:26:39.455Z] Running command: "/home/jenkins/workspace/Test_openjdk21_j9_sanity.functional_x86-64_linux_jit_Personal_testList_0/jdkbinary/j2sdk-image/bin/java" -XX:+UseJITServer -Xcompressedrefs -Xgcpolicy:gencon -Xjit:enableOSR,count=0  -Xdump -Xgcthreads1  -XX:+OSRSafePointFV -Xdump:system:events=abort  -agentlib:jvmtitest=test:decomp002 -cp "/home/jenkins/workspace/Test_openjdk21_j9_sanity.functional_x86-64_linux_jit_Personal_testList_0/aqa-tests/TKG/../../jvmtest/functional/cmdLineTests/jvmtitests/jvmtitest.jar" com.ibm.jvmti.tests.util.TestRunner
[2026-04-08T16:26:39.455Z] Time spent starting: 3 milliseconds
[2026-04-08T16:26:39.455Z] Time spent executing: 85 milliseconds
[2026-04-08T16:26:39.455Z] Test result: FAILED
[2026-04-08T16:26:39.455Z] Output from test:
[2026-04-08T16:26:39.455Z]  [ERR] Exception in thread "(unnamed thread)" java/lang/ExceptionInInitializerError
[2026-04-08T16:26:39.455Z]  [ERR] 	at java/lang/J9VMInternals.ensureError (java.base@21/J9VMInternals.java:209)
[2026-04-08T16:26:39.455Z]  [ERR] 	at java/lang/J9VMInternals.recordInitializationFailure (java.base@21/J9VMInternals.java:198)
[2026-04-08T16:26:39.455Z]  [ERR] 	at java/lang/invoke/MemberName.getFactory (java.base@21/MemberName.java:932)
[2026-04-08T16:26:39.455Z]  [ERR] 	at java/lang/invoke/MethodHandles.<clinit> (java.base@21/MethodHandles.java:104)
[2026-04-08T16:26:39.455Z]  [ERR] 	at jdk/internal/access/SharedSecrets.ensureClassInitialized (java.base@21/SharedSecrets.java:537)
[2026-04-08T16:26:39.455Z]  [ERR] 	at jdk/internal/access/SharedSecrets.getJavaNetURLAccess (java.base@21/SharedSecrets.java:224)
[2026-04-08T16:26:39.455Z]  [ERR] 	at jdk/internal/loader/URLClassPath.<clinit> (java.base@21/URLClassPath.java:632)
[2026-04-08T16:26:39.455Z]  [ERR] 	at jdk/internal/loader/ClassLoaders.<clinit> (java.base@21/ClassLoaders.java:92)
[2026-04-08T16:26:39.455Z]  [ERR] 	at java/lang/ClassLoader.initializeClassLoaders (java.base@21/ClassLoader.java:183)
[2026-04-08T16:26:39.455Z]  [ERR] 	at java/lang/Thread.initialize (java.base@21/Thread.java:3160)
[2026-04-08T16:26:39.455Z]  [ERR] 	at java/lang/Thread.<init> (java.base@21/Thread.java:3242)
[2026-04-08T16:26:39.455Z]  [ERR] java/lang/NullPointerException
[2026-04-08T16:26:39.455Z]  [ERR] 	at java/lang/invoke/MemberName$Factory.<init> (java.base@21/MemberName.java:4294967295)
[2026-04-08T16:26:39.455Z]  [ERR] 	at java/lang/invoke/MemberName$Factory.<clinit> (java.base@21/MemberName.java:940)
[2026-04-08T16:26:39.455Z]  [ERR] 	at java/lang/invoke/MemberName.getFactory (java.base@21/MemberName.java:932)
[2026-04-08T16:26:39.455Z]  [ERR] 	at java/lang/invoke/MethodHandles.<clinit> (java.base@21/MethodHandles.java:104)
[2026-04-08T16:26:39.455Z]  [ERR] 	at jdk/internal/access/SharedSecrets.ensureClassInitialized (java.base@21/SharedSecrets.java:537)
[2026-04-08T16:26:39.455Z]  [ERR] 	at jdk/internal/access/SharedSecrets.getJavaNetURLAccess (java.base@21/SharedSecrets.java:224)
[2026-04-08T16:26:39.455Z]  [ERR] 	at jdk/internal/loader/URLClassPath.<clinit> (java.base@21/URLClassPath.java:632)
[2026-04-08T16:26:39.455Z]  [ERR] 	at jdk/internal/loader/ClassLoaders.<clinit> (java.base@21/ClassLoaders.java:92)
[2026-04-08T16:26:39.455Z]  [ERR] 	at java/lang/ClassLoader.initializeClassLoaders (java.base@21/ClassLoader.java:183)
[2026-04-08T16:26:39.455Z]  [ERR] 	at java/lang/Thread.initialize (java.base@21/Thread.java:3160)
[2026-04-08T16:26:39.455Z]  [ERR] 	at java/lang/Thread.<init> (java.base@21/Thread.java:3242)
[2026-04-08T16:26:39.455Z] >> Success condition was not found: [Return code: 0]

Merging.