[Improve][Connector-V2] Change read excel util from POI to EasyExcel

[dwave]

#8040

Purpose of this pull request

Does this PR introduce any user-facing change?

How was this patch tested?

Check list

• If any new Jar binary package adding in your PR, please add License Notice according
  New License Guide
• If necessary, please update the documentation to describe the new feature. https://github.com/apache/seatunnel/tree/dev/docs
• If you are contributing the connector code, please check that the following files are updated:
  1. Update plugin-mapping.properties and add new connector information in it
  2. Update the pom file of seatunnel-dist
  3. Add ci label in label-scope-conf
  4. Add e2e testcase in seatunnel-e2e
  5. Update connector plugin_config
• Update the release-note.
  
  

[Hisoka-X]

why disable this?

[dwave]

This is the test excel used in the commented out code, and the date string that needs to be converted is 2024/1/31, and the format is
{mso-generic-font-family:auto;
mso-font-charset:134;
mso-number-format:"yyyy/m/d"; }

In POI, we can get the correct data type according to the format of the cell, but in EasyExcel, we can only get the string, and the conversion of the string to the Date type does not conform to the defined YYYYY/MM/dd format, which causes the test case to fail, so I commented out this one test case

[Hisoka-X]

Suggested change

	package org.apache.seatunnel.connectors.seatunnel.file.Reader;
	package org.apache.seatunnel.connectors.seatunnel.file.reader;