General fixes (#102)

* Improved PDF embedded annotation hit detection logic

* Updated EPUB and PDF reader logic to improve position tracking and TTS stability.

Key changes:
- Refined CFI and locator handling in `EpubReaderScreen` with improved initialization.
- Updated `BookPaginator` to more accurately calculate text offsets in chunks and improve CFI matching logic.
- Modified `TtsPlaybackManager` to insert media items at the correct index, ensuring proper playback order.
- Simplified `EpubReaderTts` page scrolling by removing conditional checks for backward jumps.
- Disabled OCR fallback in `PdfViewerScreen` during text extraction for TTS.

* Updated extractTextWithCfiFromTop to use getBoundingClientRect for identifying the starting block

app/src/main/java/com/aryan/reader/epubreader/EpubReaderTts.kt

@@ -215,11 +215,8 @@ fun TtsHighlightHandler(
         val targetPage = pag.findPageForCfiAndOffset(chapterIdx, cfi, offset)
 
         if (targetPage != null && targetPage != pagerState.currentPage) {
-            // Prevent backward jumps during reading (unless significant) to avoid jitter
-            if (targetPage >= pagerState.currentPage) {
-                scope.launch {
-                    pagerState.animateScrollToPage(targetPage)
-                }
+            scope.launch {
+                pagerState.animateScrollToPage(targetPage)
             }
         }
     }