[GR-77108] Prevent outlining separately compiled secondary bytecode switches

[graalvmbot]

Summary

Prevent handler outlining when a secondary bytecode interpreter switch is compiled as a separate method.

Bytecode DSL may split a large interpreter switch into partition methods such as continueAt_1. During hosted compilation, these secondary switches are inlined into the primary switch, where their handler calls are outlined normally. Secondary switches can also remain independently callable, including from deoptimization-target code. In that case, their handler calls must remain ordinary calls.

Changes

• Add secondarySwitch to BytecodeInterpreterHandlerConfig.
• Mark generated Bytecode DSL partition switches as secondary.
• Skip OutlineBytecodeHandlerPhase when compiling a secondary switch separately.
• Preserve handler configuration mapping between primary and secondary switches by excluding the policy flag from ABI comparison.
• Document the new configuration in the Truffle 25.2 changelog.

The primary switch still inlines the secondary switch and outlines its handler calls. Only the independently compiled secondary method is excluded from outlining.