*: update table format for docs PDF display

[lilin90]

What is changed, added or deleted? (Required)

Modify the format of tables (of the following types) to grid_tables, to make tables show well in docs PDF.

• Tables with mixed Markdown table syntax and HTML table tag (for example, <td><ul><li>x86_64</li><li>ARM 64</li></ul></td>, <br/>)
• Tables with HTML table tag <table>
• Tables with HTML table tag rowspan or colspan

Which TiDB version(s) do your changes apply to? (Required)

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For details, see tips for choosing the affected versions (in Chinese).

• master (the latest development version)
• v7.6 (TiDB 7.6 versions)
• v7.5 (TiDB 7.5 versions)
• v7.4 (TiDB 7.4 versions)
• v7.3 (TiDB 7.3 versions)
• v7.1 (TiDB 7.1 versions)
• v6.5 (TiDB 6.5 versions)
• v6.1 (TiDB 6.1 versions)
• v5.4 (TiDB 5.4 versions)
• v5.3 (TiDB 5.3 versions)
• v5.2 (TiDB 5.2 versions)
• v5.1 (TiDB 5.1 versions)
• v5.0 (TiDB 5.0 versions)

What is the related PR or file link(s)?

• This PR is translated from:
• Other reference link(s): release 6.5: update table format for docs PDF display #16485

Do your changes match any of the following descriptions?

• Delete files
• Change aliases
• Need modification after applied to another branch
• Might cause conflicts after applied to another branch

[ti-chi-bot]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[ti-chi-bot]

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[ti-chi-bot]

@lilin90: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-verify	ff4b1de	link	true	/test pull-verify

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[ti-chi-bot]

PR needs rebase.

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