Allow insertIgnoreConflict to work with sharding and use it for filecache.#59732

tcitworld wants to merge 3 commits intomasternextcloud/server:masterfrom

bug/19494/insert-ignore-conflict-for-filecache-extended-reworknextcloud/server:bug/19494/insert-ignore-conflict-for-filecache-extended-reworkCopy head branch name to clipboard