fix(interactive): Distinguish 'label equals' or 'unique key equals' from Filter Conditions

[shirly121]

What do these changes do?

1. distinguish 'label equals' or 'unique key equals' from filter conditions, 'label equals' is fused to decide the label type while 'unique key equals' is fused for index predicate.
2. convert index predicate from RelNode to ir core.
3. handle special cases when converting 'SEARCH' operator from RelNode to ir core. Specifically, if 'SEARCH' happens in index predicate or the operand of 'SEARCH' is a continuous range, it will be converted to multiple conditions connected by 'and' or 'or'. These conversions may not necessarily be reasonable, at least in order to make ir core supported.

Related issue number

Fixes

[longbinlai]

LGTM.

[codecov-commenter]

Codecov Report

Merging #3285 (7f0005e) into main (f813f9b) will not change coverage.
Report is 1 commits behind head on main.
The diff coverage is n/a.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3285   +/-   ##
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  Coverage   42.06%   42.06%           
=======================================
  Files         101      101           
  Lines       11021    11021           
=======================================
  Hits         4636     4636           
  Misses       6385     6385           

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