RFR: JDK-8318566: Heap walking functions should not use FilteredFieldStream

[Alex Menkov]

FilteredFieldStream used by heap walking functions to iterate through klass/superclasses/interfaces fields are known to have poor performance (see [JDK-8317692](https://bugs.openjdk.org/browse/JDK-8317692) for details).
Heap walking API implementation is the last user of the klasses.
The fix reworks iteration through klass/superclasses/interfaces fields and drops FilteredFieldStream-related code.
Additionally removed/updated includes of reflectionUtils.hpp.

Testing:
  - tier1..4;
  - test/hotspot/jtreg/vmTestbase/nsk/jvmti (contains tests for different heap walking functions);
  - new test from #17580 (now the test runs several times faster).

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Commit messages:
 - fix

Changes: https://git.openjdk.org/jdk/pull/17661/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17661&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8318566
  Stats: 290 lines in 10 files changed: 41 ins; 230 del; 19 mod
  Patch: https://git.openjdk.org/jdk/pull/17661.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17661/head:pull/17661

PR: https://git.openjdk.org/jdk/pull/17661