[UI] When creating/updating pipeline, user can still click next and save pipeline when adding invalid tags

[jingnanl]

Summary

When creating/updating pipeline, user can still click next and save pipeline when adding invalid tags, although there is error message in the UI. As an improvement, we may want to disable "Next" button when there is any invalid input.

Steps to reproduce

1. Create pipeline
2. Input invalid tags in the first step (the error message should show up)
3. Click "Next" button

What is the current bug behavior?

User can save the pipeline, and the action is likely to fail due to invalid tags.

What is the expected correct behavior?

Disable "Next" button until all the input is valid.

Relevant logs and/or screenshots

Possible fixes

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This is 🐛 Bug Report

[zxkane]

Is it fixed in #881?