`MidCircuitMeasurementAnalyzer` doesn't handle all cases of measurement assigned variables

[1tnguyen]

There is an oversight in this line:

cuda-quantum/python/cudaq/kernel/analysis.py

Line 49 in 035bd3b

if 'id' in condition.__dict__ and condition.id in self.measureResultsVars:

There are two cases:

• For simple variable comparison (var == True/False): the id field is actually in the left node, i.e., we need to look for condition.left.id.

• For subscript variables, e.g., results[0], the left is an ast.Subscript object, hence we need to look for the value field to find the variable name.