调整添加医嘱按钮放开权限。不置灰，点击提醒

src/pages/entryWrite/page/Entry/prescription/prescription.vue

@@ -12,12 +12,7 @@
                     <text class="topTitle__sub">西药 <text class="money">¥{{ wesMedAmount }}</text></text>
                     <text class="topTitle__sub">草药 <text class="money">¥{{ herbsAmount }}</text></text>
                 </view>
-                <button
-                    v-if="patientData.changeDataFlag != 'N'"
-                    :class="['addtext', { 'addtext--disabled': !hasMainDiag }]"
-                    :disabled="!hasMainDiag"
-                    @tap="addChange"
-                >
+                <button v-if="patientData.changeDataFlag != 'N'" class="addtext" @tap="addChange">
                     + 添加医嘱
                 </button>
             </view>
@@ -1868,13 +1863,6 @@ export default {
     border: initial;
 }
 
-.addtext--disabled {
-    background-color: #c0c4cc !important;
-    color: #fff !important;
-    opacity: 0.7;
-    pointer-events: none;
-}
-
 .medData {
     border-bottom: 1rpx solid #f0f2f5;
     color: #4b5563;