[CH]Optimize and filter conditions by move equals ahead

### Description

when do query contains multiple `and` conditions in where , just like `select count(1) from test_tbl where cast(b as string) != '' and a = 1`, we can simply move the equals conditions ahead to improve the performance, the sql can be executed as `select count(1) from test_tbl where a = 1 and cast(b as string) != ''`, below it is the performance comparsion of the two sql



No file, test, or entry point is identified in the issue. Start by locating the ClickHouse condition-processing path that handles multiple WHERE predicates, then inspect how equality and cast conditions are ordered. Done means equivalent conditions are executed with equality predicates first and the reported query-performance improvement is validated.

Written by the indexing model from the issue text.