fix(rules/renderer): Detect missing apiVersion for method declarations

Similar to the already supported property assigment with an arrow
function, 'renderer' might also be declared as a method declarations or
function declaration (which is transpiled to a method declaration).

If the 'renderer' property is set to a function/method, this implies
apiVersion 1 and should therefore be reported as deprecated API usage.

Follow up of #439

JIRA: CPOUI5FOUNDATION-878

Author: RandomByte

src/linter/ui5Types/SourceFileLinter.ts

@@ -340,6 +340,10 @@ export default class SourceFileLinter {
 				// i.e. { renderer: {apiVersion: 2, render: () => {}} }
 				this.analyzeControlRendererInternals(rendererMember.initializer);
 			}
+		} else if (ts.isMethodDeclaration(rendererMember)) {
+			// Analyze renderer property when it's a function (which gets transpiled to a method declaration)
+			// i.e. { renderer: function() => {} }
+			this.analyzeControlRendererInternals(rendererMember);
 		}
 	}