Fix line wrapping for arrays and objects in FQL formatter

[Copilot]

The useNewLine() check compared raw content length against MaxLineLen, but didn't account for brackets, braces, separators, and property syntax that get added during output. This caused arrays and objects exceeding print width to remain on single lines.

// Before: stays on one line despite exceeding 80 chars
LET a = { a: "foo", b: { c: "Lorem ipsum dolor sit amet", d: "Lorem ipsum dolor sit amet" } }

// After: correctly wraps when exceeding print width
LET a = {
    a: "foo",
    b: { c: "Lorem ipsum dolor sit amet", d: "Lorem ipsum dolor sit amet" }
}

Changes

• ArrayScope: Add Len() that includes [] brackets and , separators; override useNewLine() to use accurate length
• ObjectScope: Add Len() that includes {} braces, internal { } spacing, and , separators; override useNewLine() to use accurate length
• PropertyAssignmentScope: Enhance Len() to include : for non-shorthand properties

Original prompt

Implement FQL (Ferret Query Language) formatter.

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