Replace `TypeSignature::Numeric` with `TypeSignature::Coercible`

### Is your feature request related to a problem or challenge?

After #14440, we can use `Coercible` for existing `Numeric` signature

### Describe the solution you'd like

_No response_

And deprecate `TypeSignature::Numeric`

### Describe alternatives you've considered

_No response_

### Additional context

#14440
#13301

Start by reading the context in issues #14440 and #13301, then locate the existing TypeSignature::Numeric definition and its usages. The work is complete when those usages use TypeSignature::Coercible and TypeSignature::Numeric is deprecated, with relevant tests updated or added as needed.

Written by the indexing model from the issue text.