feat: allow to reset config once dialog has been opened

[va-stefanek]

PR Checklist

Please check if your PR fulfills the following requirements:

• [x] The commit message follows our guidelines: CONTRIBUTING.md#commit
• [ ] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[x] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Other... Please describe:

What is the current behavior?

We are not allowed to override config once it has been opened

Issue Number: #41

What is the new behavior?

We can override config of the dialog after opening

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[va-stefanek]

@NetanelBasal do you have any idea how I can write tests for it? I see that we are not testing dialogRef methods like onClose, onReset and now mine updateDialogConfig

[NetanelBasal]

You can mock it

[va-stefanek]

@NetanelBasal I have added some basic test and documentation

[va-stefanek]

@NetanelBasal can I ask for review?

[shaharkazaz]

We appreciate the PR, I've added this feature (with a different API) as part of a refactor I've made. It's available in v4.2.0, see the usage example under DialogRef API