chore: improve integration tests (#8727)

Improve integration tests:
- spliting the tests in TokenExchange to isolated instances and in
parallel
- corrected some test structure so that the check for Details is no done
anymore if the test already failed
- replace required-calls with assert-calls to not stop the testing
- add gofakeit for application, project and usernames(emails)
- add eventually checks for testing in actions v2, so the request only
get called when the execution is defined
- check for length of results in list/search endpoints to avoid index
errors

internal/api/grpc/org/v2/org_test.go

@@ -6,7 +6,6 @@ import (
 
 	"github.com/muhlemmer/gu"
 	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
 	"google.golang.org/protobuf/types/known/timestamppb"
 
 	"github.com/zitadel/zitadel/internal/command"
@@ -110,7 +109,7 @@ func Test_addOrganizationRequestToCommand(t *testing.T) {
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			got, err := addOrganizationRequestToCommand(tt.args.request)
-			require.ErrorIs(t, err, tt.wantErr)
+			assert.ErrorIs(t, err, tt.wantErr)
 			assert.Equal(t, tt.want, got)
 		})
 	}
@@ -165,7 +164,7 @@ func Test_createdOrganizationToPb(t *testing.T) {
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			got, err := createdOrganizationToPb(tt.args.createdOrg)
-			require.ErrorIs(t, err, tt.wantErr)
+			assert.ErrorIs(t, err, tt.wantErr)
 			assert.Equal(t, tt.want, got)
 		})
 	}