WIP: Don't preload jmethodIDs when cstack=vm

[zhengyu123]

What does this PR do?:

Motivation:

Additional Notes:

How to test the change?:

For Datadog employees:

• If this PR touches code that signs or publishes builds or packages, or handles
  credentials of any kind, I've requested a review from @DataDog/security-design-and-guidance.
• This PR doesn't touch any of that.
• JIRA: [JIRA-XXXX]

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[datadog-official]

✨ Fix all issues with BitsAI

⚠️ Warnings

🚦 1 Pipeline job failed

CI Run | test-matrix / test-linux-glibc-amd64 (11-j9, debug)     

See error

Test process encountered an unexpected problem. Gradle Test Executor 1 finished with non-zero exit value 1.

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[dd-octo-sts]

CI Test Results

Run: #26788678150 | Commit: 2b055ff | Duration: 12m 7s (longest job)

✅ All 32 test jobs passed

Status Overview

JDK	glibc-aarch64/debug	glibc-amd64/debug	musl-aarch64/debug	musl-amd64/debug
8	-	✅	-	-
8-ibm	-	✅	-	-
8-j9	✅	✅	-	-
8-librca	-	-	✅	✅
8-orcl	-	✅	-	-
11	-	✅	-	-
11-j9	✅	✅	-	-
11-librca	-	-	✅	✅
17	✅	✅	-	-
17-graal	✅	✅	-	-
17-j9	✅	✅	-	-
17-librca	-	-	✅	✅
21	✅	✅	-	-
21-graal	✅	✅	-	-
21-librca	-	-	✅	✅
25	✅	✅	-	-
25-graal	✅	✅	-	-
25-librca	-	-	✅	✅

Legend: ✅ passed | ❌ failed | ⚪ skipped | 🚫 cancelled

Summary: Total: 32 | Passed: 32 | Failed: 0

---

Updated: 2026-06-01 23:51:01 UTC

[dd-octo-sts]

Scan-Build Report

User:	runner@runnervm3jyl0
Working Directory:	/home/runner/work/java-profiler/java-profiler/ddprof-lib/src/test/make
Command Line:	make -j4 all
Clang Version:	Ubuntu clang version 18.1.3 (1ubuntu1)
Date:	Tue Jun 2 12:33:05 2026

Bug Summary

Bug Type	Quantity	Display?
All Bugs	1
Unused code
Dead initialization	1

Reports

Bug Group	Bug Type ▾	File	Function/Method	Line	Path Length
Unused code	Dead initialization	flightRecorder.cpp	resolveMethod	489	1