[PatternLang][Bugfix] Ensure CallNode attrs are not undefined before checking #7278
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Currently, using a dataflow pattern to attempt to match attributes on a call node (for calls to ordinary Relay functions, not operators) results in a segmentation fault due to attempting to access an
AttrsNode
that is not present. This PR checks if the attributes node exists first to prevent the segfault and adds unit tests for this case.Please review @jroesch @mbrookhart