[test](Nereids) turn on all test in scalar function w

[morrySnow]

Proposed changes

Issue Number: close #xxx

Problem summary

1. turn on all test case in scalar function W except width_bucket(fix be bug in next PR)
2. turn off all test case for group_concat(distinct order by)
3. fix return nullable in TimestampArithmetic

Checklist(Required)

• [ ] Does it affect the original behavior
• [ ] Has unit tests been added
• [ ] Has document been added or modified
• [ ] Does it need to update dependencies
• [ ] Is this PR support rollback (If NO, please explain WHY)

Further comments

If this is a relatively large or complex change, kick off the discussion at [email protected] by explaining why you chose the solution you did and what alternatives you considered, etc...

[morrySnow]

run buildall

[morrySnow]

run buildall

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[morrySnow]

run buildall

[hello-stephen]

TeamCity pipeline, clickbench performance test result: the sum of best hot time: 35.16 seconds stream load tsv: 471 seconds loaded 74807831229 Bytes, about 151 MB/s stream load json: 42 seconds loaded 2358488459 Bytes, about 53 MB/s stream load orc: 74 seconds loaded 1101869774 Bytes, about 14 MB/s stream load parquet: 31 seconds loaded 861443392 Bytes, about 26 MB/s https://doris-community-test-1308700295.cos.ap-hongkong.myqcloud.com/tmp/20230303144311_clickbench_pr_108177.html

[morrySnow]

run buildall

[github-actions[bot]]

clang-tidy review says "All clean, LGTM! :+1:"

[github-actions[bot]]

PR approved by at least one committer and no changes requested.

[github-actions[bot]]

PR approved by anyone and no changes requested.

[morrySnow]

run buildall

[github-actions[bot]]

PR approved by at least one committer and no changes requested.