Strip reasons when concatenating them in ConditionEvaluationResult

Prior to this commit, invoking:

ConditionEvaluationResult.disabled("  x  ", "  y  ")

Resulted in: "x  ==>  y"

With this change, the result is now: "x ==> y"

See: #4698
Closes: #4715

(cherry picked from commit fd6b40b)

Author: sbrannen

junit-jupiter-api/src/main/java/org/junit/jupiter/api/extension/ConditionEvaluationResult.java

@@ -76,7 +76,7 @@ public static ConditionEvaluationResult disabled(String reason, String customRea
 		if (StringUtils.isBlank(customReason)) {
 			return disabled(reason);
 		}
-		return disabled(String.format("%s ==> %s", reason, customReason));
+		return disabled(String.format("%s ==> %s", reason.trim(), customReason.trim()));
 	}
 
 	private final boolean enabled;

jupiter-tests/src/test/java/org/junit/jupiter/api/condition/ConditionEvaluationResultTests.java

@@ -100,7 +100,16 @@ void disabledWithBlankDefaultReasonAndBlankCustomReason(String reason) {
 
 	@Test
 	void disabledWithDefaultReasonAndCustomReason() {
-		var result = ConditionEvaluationResult.disabled("default", "custom");
+		disabledWithDefaultReasonAndCustomReason("default", "custom");
+	}
+
+	@Test
+	void disabledWithDefaultReasonAndCustomReasonWithLeadingAndTrailingWhitespace() {
+		disabledWithDefaultReasonAndCustomReason("   default   ", "   custom   ");
+	}
+
+	private static void disabledWithDefaultReasonAndCustomReason(String defaultReason, String customReason) {
+		var result = ConditionEvaluationResult.disabled(defaultReason, customReason);
 
 		assertThat(result.isDisabled()).isTrue();
 		assertThat(result.getReason()).contains("default ==> custom");