fix: make elapsedTime option work in non-spinner mode

Display elapsed time at the end of the bar when elapsedTime is enabled
while predictTime is set to false.

Demo:
```
70% |███████   |  [0s]
```

Author: wjf3121

progressbar.go

@@ -323,7 +323,7 @@ func NewOptions64(max int64, options ...Option) *ProgressBar {
 			width:            40,
 			max:              max,
 			throttleDuration: 0 * time.Nanosecond,
-			elapsedTime:      true,
+			elapsedTime:      max == -1,
 			predictTime:      true,
 			spinnerType:      9,
 			invisible:        false,
@@ -840,7 +840,7 @@ func renderProgressBar(c config, s *state) (int, error) {
 		}
 		rightBrac = rightBracNum.String()
 		fallthrough
-	case c.elapsedTime:
+	case c.elapsedTime || c.showElapsedTimeOnFinish:
 		leftBrac = (time.Duration(time.Since(s.startTime).Seconds()) * time.Second).String()
 	}
 
@@ -944,8 +944,7 @@ func renderProgressBar(c config, s *state) (int, error) {
 			strings.Repeat(c.theme.SaucerPadding, repeatAmount),
 			c.theme.BarEnd,
 			sb.String())
-
-		if s.currentPercent == 100 && c.showElapsedTimeOnFinish {
+		if (s.currentPercent == 100 && c.showElapsedTimeOnFinish) || c.elapsedTime {
 			str = fmt.Sprintf("%s [%s]", str, leftBrac)
 		}
 

progressbar_test.go

@@ -464,6 +464,37 @@ func TestOptionSetElapsedTime_spinner(t *testing.T) {
 	}
 }
 
+func TestOptionSetElapsedTime(t *testing.T) {
+	buf := strings.Builder{}
+	bar := NewOptions(
+		10,
+		OptionSetElapsedTime(false),
+		OptionSetPredictTime(false),
+		OptionSetWidth(10),
+		OptionSetWriter(&buf),
+	)
+
+	_ = bar.Add(2)
+	result := strings.TrimSpace(buf.String())
+	expect := "20% |██        |"
+
+	if result != expect {
+		t.Errorf("Render miss-match\nResult: '%s'\nExpect: '%s'\n%+v", result, expect, bar)
+	}
+
+	bar.Reset()
+	bar.config.elapsedTime = true
+	buf.Reset()
+
+	_ = bar.Add(7)
+	result = strings.TrimSpace(buf.String())
+	expect = "70% |███████   |  [0s]"
+
+	if result != expect {
+		t.Errorf("Render miss-match\nResult: '%s'\nExpect: '%s'\n%+v", result, expect, bar)
+	}
+}
+
 func TestShowElapsedTimeOnFinish(t *testing.T) {
 	buf := strings.Builder{}
 	bar := NewOptions(10,
@@ -739,9 +770,9 @@ func TestOptionFullWidth(t *testing.T) {
 		{ // 4
 			[]Option{OptionSetPredictTime(false)},
 			"" +
-				"\r  10% |██████                                                          |  " +
-				"\r                                                                          \r" +
-				"\r 100% |████████████████████████████████████████████████████████████████|  ",
+				"\r  10% |██████                                                               |  " +
+				"\r                                                                               \r" +
+				"\r 100% |█████████████████████████████████████████████████████████████████████|  ",
 		},
 		{ // 5
 			[]Option{OptionSetPredictTime(false), OptionShowElapsedTimeOnFinish()},
@@ -795,9 +826,9 @@ func TestOptionFullWidth(t *testing.T) {
 		{ // 12
 			[]Option{OptionShowIts(), OptionShowCount(), OptionSetPredictTime(false)},
 			"" +
-				"\r  10% |████                                           | (10/100, 10 it/s) " +
-				"\r                                                                          \r" +
-				"\r 100% |██████████████████████████████████████████████| (100/100, 50 it/s) ",
+				"\r  10% |█████                                               | (10/100, 10 it/s) " +
+				"\r                                                                               \r" +
+				"\r 100% |███████████████████████████████████████████████████| (100/100, 50 it/s) ",
 		},
 		{ // 13
 			[]Option{OptionShowIts(), OptionShowCount(), OptionSetPredictTime(false), OptionShowElapsedTimeOnFinish()},