Improve Inlay Hint Generics Display in Function Signatures

[dongzhaolee]

Description:
When using rust-analyzer in VSCode, the inlay hints for function signatures fail to display generic type information during autocompletion/method chain navigation, despite the hover tooltip showing complete generics metadata. This inconsistency impacts code comprehension during active development.

Expected Behavior:
Both inlay hints (parameter help/autocomplete) and hover tooltips should consistently display generic type #information.

Details:
_NO GENERIC TYPE BOUNDS INFORMATION _

THE HOVER TOOLTIP SHOWING COMPLETE GENERICS METADATA

[roife]

closed in #19596