Resolve eslint order problem

Author: daansmit

src/components/input_fields/code_field.tsx

@@ -42,6 +42,12 @@ export interface CodeFieldState {
  * The code field is a text field that includes {maxLength} single-letter password inputs.
  */
 export class CodeField extends React.Component<CodeFieldProps, CodeFieldState> {
+    /**
+     * if the user wrote one of the later characters but not earlier ones,
+     * we add this character as filler
+     */
+    private static readonly _emptyChar: string = '\t';
+
     /**
      * References to the input fields to focus on them.
      * Note that we don't use React.CreateRef because that would require some extra code
@@ -102,12 +108,6 @@ export class CodeField extends React.Component<CodeFieldProps, CodeFieldState> {
         };
     }
 
-    /**
-     * if the user wrote one of the later characters but not earlier ones,
-     * we add this character as filler
-     */
-    private static readonly _emptyChar: string = '\t';
-
     /**
      * Handles changes to the text selection in the document.
      * Without this function, if the value of the field changes (with delete for example)