C++: Update expected test results after extractor changes

[jketema]

No description provided.

[Copilot]

Pull request overview

Updates C++ QL test .expected files to match new extractor output formatting, primarily around floating-point literal rendering and resulting IR/AST test baselines.

Changes:

• Normalize floating-point literal formatting in query-test and library-test expected outputs (e.g., scientific notation and trimmed decimal expansions).
• Update IR/AST printed expectations to reflect the new canonical literal formatting.
• Adjust guard/rangeanalysis expected outputs where numeric literal string forms changed.

Show a summary per file

File	Description
cpp/ql/test/query-tests/Likely Bugs/Underspecified Functions/MistypedFunctionArguments.expected	Updates expected argument-literal spellings (e.g., 2.5E9, 3.5E15) to match extractor output.
cpp/ql/test/library-tests/rangeanalysis/SimpleRangeAnalysis/nrOfBounds.expected	Replaces long floating expansions with shortened canonical forms across many rows.
cpp/ql/test/library-tests/ir/ir/raw_ir.expected	Updates IR constants (e.g., 2.200000... → 2.2, 2.299999... → 2.3) and corresponding formatting.
cpp/ql/test/library-tests/ir/ir/aliased_ir.expected	Mirrors raw IR expected updates for constants/formatting in the aliased IR output.
cpp/ql/test/library-tests/ir/ir/PrintAST.expected	Updates printed AST literal values to match new canonical formatting.
cpp/ql/test/library-tests/controlflow/guards/GuardsEnsure.expected	Updates expected numeric literal rendering in guard outputs (e.g., ...e-07 → 1.0E-6).
cpp/ql/test/library-tests/controlflow/guards/GuardsCompare.expected	Updates guard comparison text expectations to use the new literal formatting.
cpp/ql/test/library-tests/builtins/complex/builtin.expected	Updates expected builtin complex literal component formatting (trimmed float/double strings).

Copilot's findings

• Files reviewed: 8/8 changed files
• Comments generated: 0