RFR: 8350462: MethodTypeForm.LF_INTERPRET can cache the MemberName instead [v2]

[Zihao Lin]

> Modify the cache in MethodTypeForm that currently stores the LF_INTERPRET Lambda form. Instead of caching the entire LambdaForm, change it to store a SoftReference<MemberName>. This will avoid unnecessary memory usage.

Zihao Lin has updated the pull request incrementally with one additional commit since the last revision:

  remove LF_INTERPRET

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Changes:
  - all: https://git.openjdk.org/jdk/pull/24468/files
  - new: https://git.openjdk.org/jdk/pull/24468/files/e70fb819..3ce154ea

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24468&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24468&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/24468.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24468/head:pull/24468

PR: https://git.openjdk.org/jdk/pull/24468