fix(new-issuer): step 3 back warning

[BilalAlGhazi]

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This PR:

Fixes the issue Issuer warned about changes when going back from step 3

[RafaelVidaurre]

@Grsmto Assigned you as reviewer since I remember you had some comments about this, can you confirm this is good?

[Grsmto]

LGTM. However I suppose the isDirty state could have sit in the step 2 directly instead of in the parent. This would have avoid this issue in the first place.
But that's just a comment, not worth refactoring now I think.

[RafaelVidaurre]

@Grsmto thanks, merging