[perf] Speed up callable param type rules by deferring type resolution until shape confirmed

[TomasVotruba]

Performance refactor of 3 rules. No behavior change - all fixtures pass unchanged.

Each rule resolved a type or parsed a docblock before confirming the call/param shape it needs could even match:

• AddClosureParamTypeFromIterableMethodCallRector - the cheap callUsesClosures() arg check now runs before getType($node->var) and the method reflection lookup, so method calls with no closure argument bail first.
• AddParamArrayDocblockBasedOnCallableNativeFuncCallRector - the callback-argument shape checks (arg present, arrow/closure, param count, typed params) now run before getNativeType($arrayArgValue), so a call whose callback is not a typed closure never resolves the array native type.
• AddParamTypeSplFixedArrayRector - the docblock info is now parsed lazily, only once a param is confirmed to be an SplFixedArray type, so functions with no such param no longer parse their docblock.

Reordering is safe: the moved checks are side-effect-free bail conditions, and the lazy docblock is created before its first use.