Added regx for input is number

mathesar_ui/src/component-library/formatted-input/FormattedInput.svelte

@@ -1,9 +1,9 @@
 <script lang="ts">
   import Diff from 'fast-diff';
-  import type {diff} from 'fast-diff';
   import TextInput from '@mathesar-component-library-dir/text-input/TextInput.svelte';
   import { getOutcomeOfBeforeInputEvent } from '@mathesar-component-library-dir/common/utils';
   import type { InputFormatter, ParseResult } from './InputFormatter';
+
   type T = $$Generic;
 
   export let formatter: InputFormatter<T>;
@@ -77,10 +77,10 @@
   ) {
     if (element) {
       element.value = intermediateDisplay;
-      const diff = Diff(userInput, intermediateDisplay, cursorPosition);
+      const diff = Diff(userInput, intermediateDisplay);
       // Find New Cursor Position using diff and cursorPosition
       let newCursorPosition = 0;
-      diff.forEach((part: diff[]) => {
+      diff.forEach((part: any[]) => {
         if (part[0] === -1) {
           newCursorPosition -= 1;
         } else if (part[0] === 1) {
@@ -106,12 +106,14 @@
       parseResult = formatter.parse(userInput);
       parentValue = parseResult.value;
       childText = parseResult.intermediateDisplay;
-
-      setCursorToPostion(
-        userInput,
-        cursorPosition,
-        parseResult.intermediateDisplay,
-      );
+      // get last character of userInput
+      // Regex for finding number
+      const regex1 = RegExp('[0-9]');
+      const lastCharacter = userInput[userInput.length - 1];
+      // set cursor position if last character is number
+      if (regex1.exec(lastCharacter)) {
+        setCursorToPostion(userInput, cursorPosition, childText);
+      }
     } catch (error) {
       onParseError({ userInput, error });
     }