[Bug] Fix bug and optimize implementation logic of tablets web page

[weizuo93]

Proposed changes

(1) The implementation logic of tablets web page is that:
  Firstly, get all the tablets of the BE;
  Secondly, return specific number tablets in front to web page according to the value of request parameter limit.
This patch optimize the implementation logic of tablets web page that getting specific number tablets in BE according to the value of request parameter limit and then return them to web page.

(2) It will return default 1000 tablets through http interface http://be_host:webserver_port/tablets_page. If the number of tablet in the BE is less than 1000, there will be coredump in the following code:

be/src/http/action/tablets_info_action.cpp


This patch fixed the bug.

Types of changes

What types of changes does your code introduce to Doris?
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• Bugfix (non-breaking change which fixes an issue)
• [] New feature (non-breaking change which adds functionality)
• [] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [] Documentation Update (if none of the other choices apply)
• [] Code refactor (Modify the code structure, format the code, etc...)

Checklist

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• [] I have create an issue on (Fix #ISSUE), and have described the bug/feature there in detail
• Compiling and unit tests pass locally with my changes
• [] I have added tests that prove my fix is effective or that my feature works
• If this change need a document change, I have updated the document
• Any dependent changes have been merged

[kangkaisen]

+1