Add back validation of parameters on gate methods

In the previous commit a side effect of the accidental eager operation
creation was that the parameter input for gates were being validated by
that. By fixing that in the previous commit the validation of input
parameters on the circuit methods was broken. This commit fixes that
oversight and adds back the validation.

crates/circuit/src/operations.rs

@@ -237,6 +237,11 @@ impl StandardGate {
     pub fn get_num_clbits(&self) -> u32 {
         self.num_clbits()
     }
+
+    #[getter]
+    pub fn get_name(&self) -> &str {
+        self.name()
+    }
 }
 
 // This must be kept up-to-date with `StandardGate` when adding or removing

qiskit/circuit/quantumcircuit.py

@@ -2315,6 +2315,9 @@ def _append_standard_gate(
 
         expanded_qargs = [self.qbit_argument_conversion(qarg) for qarg in qargs or []]
         expanded_cargs = [self.cbit_argument_conversion(carg) for carg in cargs or []]
+        if params is not None:
+            for param in params:
+                Gate.validate_parameter(op, param)
 
         instructions = InstructionSet(resource_requester=circuit_scope.resolve_classical_resource)
         broadcast_iter = Gate.broadcast_arguments(op, expanded_qargs, expanded_cargs)