RFR: 8224228: No way to locally suppress lint warnings in parser/tokenizer or preview features [v6]

[Archie Cobbs]

> This PR updates the `DeferredLintHandler` so that deferred warnings can be registered during parsing, before any `JCTree` nodes have been created, and it uses this new capability to update the `"preview"` and `"text-blocks"` Lint warnings so that they can be suppressed via `@SuppressWarnings` annotations. More details are provided in additional comments.
> 
> Note: This PR depends on (i.e., includes and extends) these other "cleanup" PR's:
> * #23167
> * #23281

Archie Cobbs has updated the pull request incrementally with one additional commit since the last revision:

  Instead of using EndPosTable, track ending positions of declarations explicitly.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/23237/files
  - new: https://git.openjdk.org/jdk/pull/23237/files/6cc1eae5..7ad56bb5

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=23237&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=23237&range=04-05

  Stats: 121 lines in 10 files changed: 54 ins; 22 del; 45 mod
  Patch: https://git.openjdk.org/jdk/pull/23237.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23237/head:pull/23237

PR: https://git.openjdk.org/jdk/pull/23237