RFR: 8224228: No way to locally suppress lint warnings in parser/tokenizer or preview features [v8]

[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
> * #23400

Archie Cobbs has updated the pull request incrementally with four additional commits since the last revision:

 - Revert gratuituous whitespace change.
 - Merge branch 'JDK-8349155' into JDK-8224228
 - Refactor to remove the "log" parameter from Lint.logIfEnabled().
 - Fix an inaccurate comment.

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/23237/files
  - new: https://git.openjdk.org/jdk/pull/23237/files/ebb6544e..44f5bedc

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=23237&range=07
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=23237&range=06-07

  Stats: 54 lines in 11 files changed: 3 ins; 3 del; 48 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