itest: use prefixed sub-tests

More sub-tests are needed in "coop close with external delivery" itest, which
would break the limit for 50 blocks mined. Turning it into prefixed itest.

Also used new exclusion approach in test "remote signer" where all the prefixed
tests are excluded.

itest/list_exclude_test.go

@@ -13,7 +13,7 @@ import (
 // be excluded from the test suite atm.
 //
 // TODO(yy): fix these tests and remove them from this list.
-var excludedTestsWindows = []string{
+var excludedTestsWindows = append(append([]string{
 	"batch channel funding",
 	"zero conf channel open",
 	"open channel with unstable utxos",
@@ -45,26 +45,12 @@ var excludedTestsWindows = []string{
 	"wipe forwarding packages",
 
 	"coop close with htlcs",
-	"coop close with external delivery",
 
 	"forward interceptor restart",
 	"forward interceptor dedup htlcs",
 	"invoice HTLC modifier basic",
 	"lookup htlc resolution",
 
-	"remote signer-taproot",
-	"remote signer-account import",
-	"remote signer-bump fee",
-	"remote signer-funding input types",
-	"remote signer-funding async payments taproot",
-	"remote signer-funding async payments",
-	"remote signer-random seed",
-	"remote signer-verify msg",
-	"remote signer-channel open",
-	"remote signer-shared key",
-	"remote signer-psbt",
-	"remote signer-sign output raw",
-
 	"on chain to blinded",
 	"query blinded route",
 
@@ -76,7 +62,12 @@ var excludedTestsWindows = []string{
 	// more investigation is needed.
 	"channel force close-anchor restart",
 	"channel force close-simple taproot restart",
-}
+}, extractNames(
+	"coop close with external delivery",
+	coopCloseWithExternalTestCases)...,
+),
+	extractNames("remote signer", remoteSignerTestCases)...,
+)
 
 // filterWindowsFlakyTests filters out the flaky tests that are excluded from
 // the test suite on Windows.