chore: apply go fix modernization (strings.SplitSeq)

Separate commit for go fix modernization unrelated to eval framework.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: spboyer

cli/azd/pkg/azdext/process_darwin.go

@@ -66,7 +66,7 @@ func findProcessByNameOS(name string) []ProcessInfo {
 	nameLower := strings.ToLower(name)
 	var results []ProcessInfo
 
-	for _, line := range strings.Split(string(output), "\n") {
+	for line := range strings.SplitSeq(string(output), "\n") {
 		line = strings.TrimSpace(line)
 		if line == "" {
 			continue