JIT: SVE `CreateBreak*` APIs should do the `ConditionalSelect` optimization

[TIHan]

The CreateBreak* APIs implemented in #104184 have the ability to be optimized with ConditionalSelect using their corresponding instructions' MERGE variant.

• CreateBreakAfterMask
• CreateBreakAfterPropagateMask
• CreateBreakBeforeMask
• CreateBreakBeforePropagateMask

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[JulieLeeMSFT]

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