feat: implement modal chart system with conditional UI and message filtering

- Add automatic data loading on IsoChartView modal open with timeout to prevent infinite loops
- Implement conditional UI visibility in IsoChartActionBar using CSS visibility property
- Create stable layout where controls reserve space when hidden (DatePicker, DIA dropdown, "Daten laden" button)
- Add Report.tsx component with precise CableLine filtering using exact string matching
- Enhance message filtering with debug logging and fallback identifier support
- Integrate chartTitle state management for seamless switching between "Messkurve" and "Meldungen"
- Add useIsoDataLoader hook for automatic chart data loading without user interaction
- Implement enhanced filtering logic to prevent false matches (CableLine1 vs CableLine16)
- Style Report component with consistent table layout matching MeldungenView design
- Add visual filter indicators and improved error messaging for better UX

Technical improvements:
- Replace conditional rendering with visibility control to maintain layout stability
- Add comprehensive logging for debugging message source filtering
- Implement proper cleanup for timeouts to prevent memory leaks
- Use exact string matching and prefix validation for precise slot identification

components/main/kabelueberwachung/kue705FO/Charts/IsoMeasurementChart/IsoChartActionBar.tsx

@@ -264,11 +264,21 @@ const IsoChartActionBar: React.FC = () => {
       </div>
 
       <div className="flex items-center space-x-2">
-        {/* DateRangePicker - nur bei Messkurve anzeigen */}
-        {chartTitle === "Messkurve" && <DateRangePicker />}
+        {/* DateRangePicker - Platz reservieren, aber ausblenden wenn Meldungen */}
+        <div
+          style={{
+            visibility: chartTitle === "Messkurve" ? "visible" : "hidden",
+          }}
+        >
+          <DateRangePicker />
+        </div>
 
-        {/* DIA0-DIA2 Dropdown - nur bei Messkurve anzeigen */}
-        {chartTitle === "Messkurve" && (
+        {/* DIA0-DIA2 Dropdown - Platz reservieren, aber ausblenden wenn Meldungen */}
+        <div
+          style={{
+            visibility: chartTitle === "Messkurve" ? "visible" : "hidden",
+          }}
+        >
           <Listbox
             value={selectedMode}
             onChange={(value) => {
@@ -326,7 +336,7 @@ const IsoChartActionBar: React.FC = () => {
               </Listbox.Options>
             </div>
           </Listbox>
-        )}
+        </div>
 
         {/* Dropdown für Auswahl zwischen "Messkurve" und "Meldungen" - immer anzeigen */}
         <Listbox
@@ -370,15 +380,19 @@ const IsoChartActionBar: React.FC = () => {
           </div>
         </Listbox>
 
-        {/* Daten laden Button - nur bei Messkurve anzeigen */}
-        {chartTitle === "Messkurve" && (
+        {/* Daten laden Button - Platz reservieren, aber ausblenden wenn Meldungen */}
+        <div
+          style={{
+            visibility: chartTitle === "Messkurve" ? "visible" : "hidden",
+          }}
+        >
           <button
             onClick={handleFetchData}
             className="px-4 py-1 bg-littwin-blue text-white rounded text-sm"
           >
             Daten laden
           </button>
-        )}
+        </div>
 
         {/* Loading Indicator - nur bei Messkurve anzeigen */}
         {chartTitle === "Messkurve" && isLoading && (