Fix Oracle dialect crash on parenthesized LIKE expression

[Fridayai700]

Summary

Fixes #7118. SELECT * FROM t WHERE c LIKE (:var) crashes with ParseError: Required keyword: 'this' missing for <class 'sqlglot.expressions.Like'> in the Oracle dialect.

Root cause: Oracle's _parse_column_ops speculatively calls _parse_interval_span, which internally calls _parse_function(). When the current token is LIKE followed by parenthesized arguments, _parse_function consumes LIKE and tries to validate LIKE(:var) as a function call — but Like requires a this argument that isn't present, so it raises a ParseError. The existing retreat logic on line 300 never executes because the error is thrown first.

Fix: Wrap the speculative _parse_interval_span call in _try_parse, which catches ParseError and properly restores the parser state. This follows the same pattern used elsewhere in the parser for speculative parsing.

# Before (buggy):
interval_span = self._parse_interval_span(this)

# After (fixed):
interval_span = self._try_parse(lambda: self._parse_interval_span(this))

All 23 Oracle dialect tests pass (211 subtests). General parser tests also pass.

[georgesittas]

Thanks