[bugfix](VecDateTimeValue) eat the value of microsecond in function from_date_format_str

[xiaojunjie]

Proposed changes

Issue Number: none

Problem summary

case: select str_to_date("2022-05-24 10:00:00.123 PM", "%Y-%m-%d %h:%i:%s.%f %p");

1. disable_vectorized
   Expected: 2022-05-24 22:00:00.123000
   Actual: 2022-05-24 22:00:00.123000

2. enables_vectorized
   Expected: 2022-05-24 22:00:00
   Actual: null

In function VecDateTimeValue::from_date_format_str, it is necessary to eat the microsecond "123" before parsing "PM", even though _microsecond has been removed in class VecDateTimeValue.

Checklist(Required)

1. Does it affect the original behavior:
   • Yes
   • No
   • I don't know
2. Has unit tests been added:
   • Yes
   • No
   • No Need
3. Has document been added or modified:
   • Yes
   • No
   • No Need
4. Does it need to update dependencies:
   • Yes
   • No
5. Are there any changes that cannot be rolled back:
   • Yes (If Yes, please explain WHY)
   • No

[yiguolei]

LGTM

[yiguolei]

#13446