Use `ListAllPages` methods for fetching lists

[lgfa29]

The current resources and data sources that fetch a list of entities currently use a large page size and sometimes have a note like this:

// TODO: It would be preferable to us the client.Images.ListAllPages method instead.
// Unfortunately, currently that method has a bug where it returns twice as many results
// as there are in reality. For now I'll use the List method with a limit of 1,000,000,000 results.
// Seems unlikely anyone will have more than one billion images.

Testing the SDK, I found that this bug was fixed on commit https://github.com/oxidecomputer/oxide.go/tree/e5aaa35f6fb3d2d3dc46a336f12b9dd62fc9ffb3, so we should now able to use the ListAllPages methods instead of requesting a single page with Limit set to oxide.NewPointer(1000000000).

Examples of where this pattern is found:

terraform-provider-oxide/internal/provider/resource_instance.go

Lines 920 to 923 in 536e0dd

	params := oxide.InstanceDiskListParams{
	Limit: oxide.NewPointer(1000000000),
	Instance: oxide.NameOrId(instanceID),
	}

terraform-provider-oxide/internal/provider/data_source_images.go

Lines 161 to 169 in 536e0dd

	// TODO: It would be preferable to us the client.Images.ListAllPages method instead.
	// Unfortunately, currently that method has a bug where it returns twice as many results
	// as there are in reality. For now I'll use the List method with a limit of 1,000,000,000 results.
	// Seems unlikely anyone will have more than one billion images.
	params := oxide.ImageListParams{
	Project: oxide.NameOrId(state.ProjectID.ValueString()),
	Limit: oxide.NewPointer(1000000000),
	SortBy: oxide.NameOrIdSortModeIdAscending,
	}