chore(textarea,textinput/lint): modernize loops

textarea/textarea.go

@@ -487,7 +487,7 @@ func (m *Model) insertRunesFromUserInput(runes []rune) {
 	// Split the input into lines.
 	var lines [][]rune
 	lstart := 0
-	for i := 0; i < len(runes); i++ {
+	for i := range runes {
 		if runes[i] == '\n' {
 			// Queue a line to become a new row in the text area below.
 			// Beware to clamp the max capacity of the slice, to ensure no
@@ -1375,7 +1375,7 @@ func (m Model) placeholderView() string {
 	// split string by new lines
 	plines := strings.Split(strings.TrimSpace(pwrap), "\n")
 
-	for i := 0; i < m.height; i++ {
+	for i := range m.height {
 		isLineNumber := len(plines) > i
 
 		lineStyle := styles.computedPlaceholder()