fix: text selected after resolving the table cannot be deleted

[LIlGG]

What type of PR is this?

/kind bug

What this PR does / why we need it:

当表格后存在选中的内容时，按下退格键或删除键不再执行选中表格的操作，而是继续向下执行。

How to test it?

在表格后紧跟着文本，从文本开头选中文本，然后按下退格键，查看文本是否能够被删除。

Which issue(s) this PR fixes:

Fixes #5193

Does this PR introduce a user-facing change?

解决默认富文本编辑器中表格后的文本选中后无法删除的问题

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (9d9b152) 57.05% compared to head (3c6e813) 57.05%.
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #5234   +/-   ##
=========================================
  Coverage     57.05%   57.05%           
  Complexity     3332     3332           
=========================================
  Files           584      584           
  Lines         19189    19189           
  Branches       1444     1444           
=========================================
  Hits          10949    10949           
  Misses         7664     7664           
  Partials        576      576           

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[LIlGG]

/milestone 2.12.x

[guqing]

当我点击表格开头的六点操作图标选中表格时无法删除，请帮我确认一下是否符合预期

[LIlGG]

当我点击表格开头的六点操作图标选中表格时无法删除，请帮我确认一下是否符合预期

这个问题确实很奇怪，理论上来说点击拖拽图标与点击全选是一样的操作，但可能是由于编辑器焦点的问题导致无法删除。
但目前实际上并没有点击拖拽图标的处理，因此这个问题算是在预期之内，可以单独提一个 issue 用来解决这个问题。

[ruibaby]

/lgtm

[f2c-ci-robot]

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