When enabled Reprovider should always start with roots strategy.

[Jorropo]

Currently if you are falling behind re-provides the content will be announced based on randomish order:

	case "all", "":
		keyProvider = fx.Provide(provider.NewBlockstoreProvider) // order depends on iteration of the blockstore
	case "roots":
		keyProvider = fx.Provide(pinnedProviderStrategy(true)) // roots
	case "pinned":
		keyProvider = fx.Provide(pinnedProviderStrategy(false)) // dfs iteration of pins

all and pinned should start by providing roots, I think it is fine to have them provide roots twice given the graph is bottom heavy this is negligible cost.
This means if your node is running the classic dht client and it is falling behind, you at least will have the roots of what you pinned announced correctly.
We might also want to do that after ipfs pin add and ipfs add (they would skip the reprovider directly and hit the dht) if we don't already do this.

This should allow users to run a classic DHT client while having things mostly work in situations like #10192.