Support Oracle full width SQL symbols

[strongduanmu]

Fixes #N/A.

Changes proposed in this pull request:

• Support Oracle full width SQL symbols for parentheses, comparison, arithmetic, and concatenation operators.
• Support Oracle qualified wildcard projections with a full width asterisk.
• Exclude those full width SQL symbols from Oracle identifier tokens so adjacent function calls and subqueries tokenize correctly.
• Add Oracle parser IT coverage for full width function calls, subqueries, comparisons, arithmetic expressions, concatenation, and qualified wildcard projections.
• Update the current development version release notes.

Local verification:

• ./mvnw -pl parser/sql/engine/dialect/oracle -am -DskipTests -Dspotless.skip=true install
• ./mvnw -pl test/it/parser -Dtest=org.apache.shardingsphere.test.it.sql.parser.oracle.InternalOracleParserIT -Dsurefire.failIfNoSpecifiedTests=false -Dspotless.skip=true test
• ./mvnw -pl test/it/rewriter -Dtest=EncryptSQLRewriterIT,ShardingSQLRewriterIT,MixSQLRewriterIT -Dsurefire.failIfNoSpecifiedTests=false -Dspotless.skip=true test
• ./mvnw spotless:apply -Pcheck -T1C
• ./mvnw checkstyle:check -Pcheck -T1C

---

Before committing this PR, I'm sure that I have checked the following options:

• My code follows the code of conduct of this project.
• I have self-reviewed the commit code.
• I have (or in comment I request) added corresponding labels for the pull request.
• I have passed maven check locally : ./mvnw clean install -B -T1C -Dmaven.javadoc.skip -Dmaven.jacoco.skip -e.
• I have made corresponding changes to the documentation.
• I have added corresponding unit tests for my changes.
• I have updated the Release Notes of the current development version. For more details, see Update Release Note

[strongduanmu]

• ### Result

Review Result: Mergeable

PR #39349 latest head 680af96bf96b0942cf4dfef40fcbd2658bc96a11 passed the code-scope review. The missed qualified wildcard case SELECT t.＊ FROM t_order t found during review has been fixed and pushed. No new blocking issues remain.

Evidence

• Added Release Note: Support Oracle full width SQL symbols #39349 was added to RELEASE-NOTES.md under 5.5.4 Enhancements.
• Fixed missed coverage: DOT_ASTERISK_ now supports .\uFF0A, with a new Oracle parser IT case select_oracle_full_width_qualified_shorthand_projection.
• Updated PR body and checked the Release Notes checklist item.
• ./mvnw -pl parser/sql/engine/dialect/oracle -am -DskipTests -Dspotless.skip=true install exit 0, BUILD SUCCESS.
• ./mvnw -pl test/it/parser -Dtest=org.apache.shardingsphere.test.it.sql.parser.oracle.InternalOracleParserIT -Dsurefire.failIfNoSpecifiedTests=false -Dspotless.skip=true test exit 0, 1802 tests passed.
• ./mvnw -pl test/it/rewriter -Dtest=EncryptSQLRewriterIT,ShardingSQLRewriterIT,MixSQLRewriterIT -Dsurefire.failIfNoSpecifiedTests=false -Dspotless.skip=true test exit 0, 1015 tests passed.
• ./mvnw spotless:apply -Pcheck -T1C exit 0; ./mvnw checkstyle:check -Pcheck -T1C exit 0.
• Parser smoke covered full width parentheses, comma, arithmetic, concatenation, mixed comparison forms, SELECT t.＊ FROM t_order t, and SELECT ＊ FROM t_order; all passed.

Coverage

• Reviewed files: RELEASE-NOTES.md, Oracle Literals.g4, Oracle Symbol.g4, 2 supported SQL XML files, and 2 expected case XML files.
• Behavior clusters: Oracle full width lexer tokens, identifier exclusion ranges, composite wildcard token, Oracle parser IT baseline, and Release Note.
• Related dialects: this PR only changes the Oracle dialect; other dialect Symbol.g4 files do not introduce full width tokens and are unaffected.
• Official docs checked: Oracle 12.2 SQL Reference SELECT, Arithmetic Operators, Concatenation Operator, and Comparison Conditions.
• CI scope: Code Correctness Review; GitHub Actions were not checked.
• Local residual: only the unrelated untracked file .codex/skills/review-pr/scripts/__pycache__/ remains, and it is not included in the PR.