(ui) Update any-sequencer dependency parsing

[drewbutlerbb4]

Which issue is resolved by this Pull Request:
Resolves #

Description of your changes:
Parsing dependencies' for any-sequencers used to be based on metadata annotations. Those metadata annotations have been removed and now dependencies can be parsed from arguments in the taskSpec. This PR addresses this and collects the dependencies from the arguments in the taskSpec.

This PR also allows conditional dependencies to be linked as well.

Environment tested:

• Python Version (use python --version):
• Tekton Version (use tkn version):
• Kubernetes Version (use kubectl version):
• OS (e.g. from /etc/os-release):

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[drewbutlerbb4]

/cc @Tomcli

[Tomcli]

thanks @drewbutlerbb4, the static graph is good. However, when you try to run this any-sequencer example, the dynamic graph has error until task1 is completed.
https://github.com/kubeflow/kfp-tekton/blob/master/sdk/python/tests/compiler/testdata/any_sequencer.yaml

[Tomcli]

Utils.tsx:32 Error loading run: 59784800-def0-4d46-a399-7701008d583e TypeError: Cannot read property 'status' of undefined
    at WorkflowParser.ts:162
    at Array.forEach (<anonymous>)
    at WorkflowParser.ts:146
    at Function.value (WorkflowParser.ts:108)
    at n.<anonymous> (RunDetails.tsx:744)
    at u (runtime.js:63)
    at Generator._invoke (runtime.js:293)
    at Generator.next (runtime.js:118)
    at r (asyncToGenerator.js:3)
    at s (asyncToGenerator.js:25)

[drewbutlerbb4]

Thanks @Tomcli should be fixed now.

[Tomcli]

thanks @drewbutlerbb4
/lgtm