fix(normalizer): preserve bracket-quoted identifiers containing spaces

[pierreln-dd]

Context

Reported in SDBM-2749: T-SQL queries using bracket-quoted identifiers with spaces in the column name (e.g. schema.[Column With Spaces]) were being normalized to invalid SQL. The brackets were stripped, leaving bare spaces in identifier position which breaks query structure.

What was happening

shouldStripIdentifierQuotes only protected non-simple identifiers in alias context. In column/table reference position, brackets were always stripped — including identifiers whose content contains spaces, which cannot appear unquoted in SQL.

A secondary issue: the lexer splits alias.[Spaced Name] into two tokens (alias. + [Spaced Name]), and the normalizer was inserting a space between them, producing alias. [Spaced Name] instead of alias.[Spaced Name].

Fix

1. shouldStripIdentifierQuotes: refuse to strip when the raw token value contains whitespace — unquoted, the content would become multiple SQL tokens.
2. appendSpace: suppress the inter-token space when the preceding token ends with . and the next is a QUOTED_IDENT.

Simple identifiers ([schema], [table]) and dot-joined multi-part identifiers ([schema].[table]) contain no whitespace and continue to be de-bracketed as before.

Test plan

• SELECT t.[Column With Spaces] FROM dbo.SomeTable AS t → brackets preserved, no spurious space
• SELECT [First Name], [Last Name] FROM [My Table] → all brackets preserved
• SELECT * FROM [public].[users] → still de-bracketed to public.users (regression)
• go test ./... passes

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