Monitor scheduled-query create fails

## Describe the bug

**Command Name**
`az monitor scheduled-query create`

**Errors:**
```
The command failed with an unexpected error. Here is the traceback:
not enough values to unpack (expected 2, got 1)
Traceback (most recent call last):
File "/usr/local/Cellar/azure-cli/2.28.0_1/libexec/lib/python3.9/site-packages/knack/cli.py", line 231, in invoke
cmd_result = self.invocation.execute(args)
File "/usr/local/Cellar/azure-cli/2.28.0_1/libexec/lib/python3.9/site-packages/azure/cli/core/commands/__init__.py", line 582, in execute
parsed_args = self.parser.parse_args(args)
File "/usr/local/Cellar/azure-cli/2.28.0_1/libexec/lib/python3.9/site-packages/knack/parser.py", line 260, in parse_args
return super().parse_args(args)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 1820, in parse_args
args, argv = self.parse_known_args(args, namespace)
File "/usr/local/Cellar/azure-cli/2.28.0_1/libexec/lib/python3.9/site-packages/azure/cli/core/parser.py", line 284, in parse_known_args
self._namespace, self._raw_arguments = super().parse_known_args(args=args, namespace=namespace)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 1853, in parse_known_args
namespace, args = self._parse_known_args(args, namespace)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 2044, in _parse_known_args
positionals_end_index = consume_positionals(start_index)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 2021, in consume_positionals
take_action(action, args)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 1930, in take_action
action(self, namespace, argument_values, option_string)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 1209, in __call__
subnamespace, arg_strings = parser.parse_known_args(arg_strings, None)
File "/usr/local/Cellar/azure-cli/2.28.0_1/libexec/lib/python3.9/site-packages/azure/cli/core/parser.py", line 284, in parse_known_args
self._namespace, self._raw_arguments = super().parse_known_args(args=args, namespace=namespace)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 1853, in parse_known_args
namespace, args = self._parse_known_args(args, namespace)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 2044, in _parse_known_args
positionals_end_index = consume_positionals(start_index)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 2021, in consume_positionals
take_action(action, args)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 1930, in take_action
action(self, namespace, argument_values, option_string)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 1209, in __call__
subnamespace, arg_strings = parser.parse_known_args(arg_strings, None)
File "/usr/local/Cellar/azure-cli/2.28.0_1/libexec/lib/python3.9/site-packages/azure/cli/core/parser.py", line 284, in parse_known_args
self._namespace, self._raw_arguments = super().parse_known_args(args=args, namespace=namespace)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 1853, in parse_known_args
namespace, args = self._parse_known_args(args, namespace)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 2044, in _parse_known_args
positionals_end_index = consume_positionals(start_index)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 2021, in consume_positionals
take_action(action, args)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 1930, in take_action
action(self, namespace, argument_values, option_string)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 1209, in __call__
subnamespace, arg_strings = parser.parse_known_args(arg_strings, None)
File "/usr/local/Cellar/azure-cli/2.28.0_1/libexec/lib/python3.9/site-packages/azure/cli/core/parser.py", line 284, in parse_known_args
self._namespace, self._raw_arguments = super().parse_known_args(args=args, namespace=namespace)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 1853, in parse_known_args
namespace, args = self._parse_known_args(args, namespace)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 2062, in _parse_known_args
start_index = consume_optional(start_index)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 2002, in consume_optional
take_action(action, args, option_string)
File "/usr/local/Cellar/python@3.9/3.9.7/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py", line 1930, in take_action
action(self, namespace, argument_values, option_string)
File "/Users/terryhumphries/.azure/cliextensions/scheduled-query/azext_scheduled_query/_actions.py", line 54, in __call__
k, v = x.split('=', 1)
ValueError: not enough values to unpack (expected 2, got 1)

```

## To Reproduce:
Steps to reproduce the behavior. Note that argument values have been redacted, as they may contain sensitive information.

- _Put any pre-requisite steps here..._
- `az monitor scheduled-query create -g {} -n {} --scopes {} --condition {} --condition-query {} {} {} {} {} {} {} {} --evaluation-frequency {} --severity {} --action-groups {} --window-size {} --auto-mitigate {} --subscription {}`

## Expected Behavior

## Environment Summary
```
macOS-11.6-x86_64-i386-64bit, Darwin 20.6.0
Python 3.9.7
Installer: HOMEBREW

azure-cli 2.28.0

Extensions:
aks-preview 0.5.34
scheduled-query 0.4.0

```
## Additional Context