Don't replace an eol by a whitespace when the last char is a Katakana-Hiragana diacritic

test/pdfs/.gitignore

@@ -574,3 +574,4 @@
 !bug1815476.pdf
 !issue16021.pdf
 !bug1770750.pdf
+!issue16063.pdf

test/unit/pdf_find_controller_spec.js

@@ -818,4 +818,40 @@ describe("pdf_find_controller", function () {
       },
     });
   });
+
+  it("performs a search in a text with some Hiragana diacritics at the end of a line", async function () {
+    const { eventBus, pdfFindController } = await initPdfFindController(
+      "issue16063.pdf"
+    );
+
+    await testSearch({
+      eventBus,
+      pdfFindController,
+      state: {
+        query: "行うことができる速結端子",
+      },
+      matchesPerPage: [1],
+      selectedMatch: {
+        pageIndex: 0,
+        matchIndex: 0,
+      },
+      pageMatches: [[63]],
+      pageMatchesLength: [[12]],
+    });
+
+    await testSearch({
+      eventBus,
+      pdfFindController,
+      state: {
+        query: "デュプレックス",
+      },
+      matchesPerPage: [1],
+      selectedMatch: {
+        pageIndex: 0,
+        matchIndex: 0,
+      },
+      pageMatches: [[205]],
+      pageMatchesLength: [[7]],
+    });
+  });
 });