Remove unneeded API call to get projects from local cluster

[catherineluse]

I was able to debug #6464 after logging into Anu's setup.

The error was caused by the fact that the cluster member did not have permission to list projects using the Steve API:

projects.management.cattle.io "p-6rkkp" is forbidden: User "u-w9kcq" cannot get resource "projects" in API group "management.cattle.io" in the namespace "c-6jf6l"

The culprit was this line of code, which attempts to refetch all projects immediately after creating a project. It requires admin access to be able to list resources in the local cluster:

await this.$dispatch('management/findAll', { type: MANAGEMENT.PROJECT, opt: { force: true } }, { root: true });

I believe the line is unnecessary because I created several projects as the cluster member and the Projects/namespaces list view was updated every time to show the newly created project.

[richard-cox]

Before this goes in, we need to validate with fixes from #6565

[catherineluse]

The findAll projects here was redundant because it was being called both in the projects/namespaces list page and in the project model.

The one that my PR deletes is the newer one, and it was last changed 10 months ago (570c465#diff-1c5f58ff28a280df24b9aada53d5e79411849100fb65ba4ea65054cad814fcb4, not sure when it was added).