refactor: remove "mx" prefixes in comments (#3354)

There is no reason to tight them to the mxGraph convention and this prefix made things harder to understand.
This change will also reduce the amount of work to do when switching to another rendering library.

Author: tbouffard

src/component/BpmnVisualization.ts

@@ -38,8 +38,8 @@ import { BpmnModelRegistry } from './registry/bpmn-model-registry';
  */
 export class BpmnVisualization {
   /**
-   * Direct access to the `mxGraph` instance that powers `bpmn-visualization`.
-   * It is for **advanced users**, so please use the lib API first and access to the `mxGraph` instance only when there is no alternative.
+   * Direct access to the `Graph` instance that powers `bpmn-visualization`.
+   * It is for **advanced users**, so please use the lib API first and access to the `Graph` instance only when there is no alternative.
    *
    * **WARN**: subject to change, could be removed or made available in another way.
    *
@@ -74,7 +74,7 @@ export class BpmnVisualization {
 
   constructor(options: GlobalOptions) {
     this.rendererOptions = options?.renderer;
-    // mxgraph configuration
+    // graph configuration
     const configurator = new GraphConfigurator(htmlElement(options?.container));
     this.graph = configurator.configure();
     // other configurations

src/component/mxgraph/shape/render/icon-painter.ts

@@ -97,7 +97,7 @@ export class IconPainter {
   /**
    * Utility paint icon methods to easily instantiate a {@link BpmnCanvas} from a {@link PaintParameter}.
    *
-   * @param canvas                  mxgraph `mxAbstractCanvas2D` in charge of performing the paint operations.
+   * @param canvas                  `mxAbstractCanvas2D` in charge of performing the paint operations.
    * @param ratioFromParent         the actual size of the icon will be computed from the shape dimensions using this ratio.
    * @param setIconOriginFunct      called function to set the origin of the icon. Generally, it calls a method of {@link BpmnCanvas}.
    * @param shapeConfig             dimension and style of the shape where the icon is painted.

src/component/navigation.ts

@@ -72,7 +72,7 @@ export class NavigationImpl implements Navigation {
 
       panningHandler.usePopupTrigger = false; // only use the left button to trigger panning
       // Reimplement the function as we also want to trigger 'panning on cells' (ignoreCell to true) and only on left-click
-      // The mxGraph standard implementation doesn't ignore right click in this case, so do it by ourselves
+      // The regular implementation doesn't ignore right click in this case, so do it by ourselves
       panningHandler.isForcePanningEvent = (me: mxMouseEvent): boolean => mxEvent.isLeftMouseButton(me.getEvent()) || mxEvent.isMultiTouchEvent(me.getEvent());
       this.graph.setPanning(true);