fix: Add dot prefix to event handlers in application templates (#142)

- Add dot prefix to 'sayHello' event handlers in both TS and JS templates
- Fixes UI5 Linter warning: no-ambiguous-event-handler
- Ensures generated apps follow UI5 best practices

---------

Co-authored-by: Matthias Osswald <mat.osswald@sap.com>

Author: Yarloy037

resources/template-js/webapp/view/Main.view.xml

@@ -24,7 +24,7 @@
 					<Button
 						id="helloButton"
 						text="{formatter: 'formatter.formatValue', path: 'i18n>btnText'}"
-						press="sayHello" />
+						press=".sayHello" />
 				</additionalContent>
 			</IllustratedMessage>
 		</content>
@@ -40,7 +40,7 @@
 			<Button
 				id="helloButton"
 				text="{formatter: 'formatter.formatValue', path: 'i18n>btnText'}"
-				press="sayHello" />
+				press=".sayHello" />
 		</buttons>
 	</MessagePage>
 <% } %><% } else { %>

resources/template-ts/webapp/view/Main.view.xml

@@ -24,7 +24,7 @@
 					<Button
 						id="helloButton"
 						text="{formatter: 'formatter.formatValue', path: 'i18n>btnText'}"
-						press="sayHello" />
+						press=".sayHello" />
 				</additionalContent>
 			</IllustratedMessage>
 		</content>
@@ -40,7 +40,7 @@
 			<Button
 				id="helloButton"
 				text="{formatter: 'formatter.formatValue', path: 'i18n>btnText'}"
-				press="sayHello" />
+				press=".sayHello" />
 		</buttons>
 	</MessagePage>
 <% } %><% } else { %>

test/expected/create_ui5_app/com.test.apiapp/webapp/view/Main.view.xml

@@ -21,7 +21,7 @@
 					<Button
 						id="helloButton"
 						text="{formatter: 'formatter.formatValue', path: 'i18n>btnText'}"
-						press="sayHello" />
+						press=".sayHello" />
 				</additionalContent>
 			</IllustratedMessage>
 		</content>