fix(org): adding unique constrants to not allow an org to be added twice with same id (#10243)

# Which Problems Are Solved

When adding 2 orgs with the same ID, you get a positive response from
the API, later when the org is projected, it errors due to the id
already in use

# How the Problems Are Solved

Check org with orgID specified does not already exist before adding
events

# Additional Changes

Added additional test case for adding same org with same name twice


# Additional Context

- Closes https://github.com/zitadel/zitadel/issues/10127

---------

Co-authored-by: Silvan <27845747+adlerhurst@users.noreply.github.com>

internal/domain/org.go

@@ -43,3 +43,7 @@ const (
 func (s OrgState) Valid() bool {
 	return s > OrgStateUnspecified && s < orgStateMax
 }
+
+func (s OrgState) Exists() bool {
+	return s != OrgStateRemoved && s != OrgStateUnspecified
+}