Added support for STRRIGHT alias in Doris (#31508)

[danigiri]

Continuing with Doris parsing support.
In this case RIGHT is already implemented and supported by both MySQL and Doris so ammended the tests and added STRRIGHT support which is an alias in Doris.

Continues to address #31508.

Changes proposed in this pull request:

• Added parsing support for the STRRIGHT alias in Doris
• Updated existing MySQL test to reflect that RIGHT is also supported by Doris
• Added STRRIGHT-specific test
• Marked // DORIS ADDED BEGIN|END Doris-specific changes, and fixed a typo in existing one
• Added as a regularFunctionName which is where RIGHT is so no java changes should be needed
• Executed SELECT STRRIGHT('foobarbar',4) in Doris 3.0.2 correctly

Next

• get PR id to update release notes
• finish compiling Doris v3 to test the query code my local machine is not powerful enough

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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.
• [✅] mvn spotless:apply -Pcheck
• [✅] mvn test -Dit.test=InternalDorisParserIT in shardingsphere/parser/sql/dialect/doris (need to specify it.test)
• [✅] Executed test case in Doris v2.0.3 – SELECT STRRIGHT('foobarbar',4)

[danigiri]

I will look at the test results again as 76b9007 was supposed to fix the failing test

[danigiri]

Looks like on the most current code mvn test -Dtest=InternalDorisParserIT is no longer picking up the tests, using mvn test -Dit.test=InternalDorisParserIT does not give an error but looks like it does not pick it up either.
The most consistent way for me to test is to do a full rebuild in one of my separate test machines after a commit but that is a bit slow.

Waiting for that full rebuild to finish and issuing a fresh commit

[danigiri]

All checks passed and it looks good, just did a merge with upstream to have it up to date. Checks will be redone but not expecting any issues there. Ready to be reviewed

[strongduanmu]

Looks great, merged. @danigiri Thank you for your excellent code.