Fix RecursionError in reindent filters for chained BETWEEN...AND

[lilu5458]

Problem

_next_token in ReindentFilter and AlignedIndentFilter used recursion to skip BETWEEN ... AND pairs. With ~1000 chained pairs (8000 tokens, well under MAX_GROUPING_TOKENS=10000), this exceeded Python's default recursion limit of 1000, causing SQLParseError: Maximum recursion depth exceeded via FilterStack.run()'s RecursionError handler.

This means a valid SQL statement with many chained BETWEEN ... AND clauses cannot be formatted with sqlparse.format(sql, reindent=True) or sqlparse.format(sql, reindent_aligned=True).

PoC

import sqlparse

parts = ["x"]
for i in range(1000):
    parts.append(f"BETWEEN {i} AND {i + 1}")
sql = "SELECT * FROM t WHERE " + " ".join(parts)

# Raises SQLParseError: Maximum recursion depth exceeded
sqlparse.format(sql, reindent=True)

Fix

Convert the recursive _next_token calls to an iterative while loop that skips all consecutive BETWEEN ... AND pairs without growing the call stack. The iterative version handles chained and nested BETWEEN ... AND pairs identically to the original recursive version.

Testing

• All existing tests pass (452 passed, 3 xfailed)
• Added test_format_chained_between_and to verify 1000 chained BETWEEN ... AND pairs can be formatted with both reindent=True and reindent_aligned=True

Checklist

• Tests added
• Code follows project style (ruff)
• No new dependencies