refactor: Make flow-build-tools dependency provided/optional in Maven plugin ITs

Make flow-build-tools dependency provided and optional in integration tests
to prevent it from being picked up by ClassFinder as a project dependency.
This better simulates real application projects which don't typically depend
on build tools directly.

Changes:
- Add provided+optional scope to 6 ITs that implement TypeScriptBootstrapModifier:
  - classfinder-lookup
  - resources-from-project
  - deps-with-classifier-dups-project
  - plugin-pinned-deps-project
  - commercial-banner-build
  - ignore-maven-deps-from-project
- Remove flow-build-tools dependency entirely from frontend-scanner-tuning-project
  (doesn't implement TypeScriptBootstrapModifier and doesn't need the dependency)

All ITs pass successfully with these changes.

Author: Artur-

flow-plugins/flow-maven-plugin/src/it/classfinder-lookup/pom.xml

@@ -33,6 +33,8 @@
             <artifactId>flow-build-tools</artifactId>
             <version>${flow.version}</version>
             <classifier>shaded</classifier>
+            <scope>provided</scope>
+            <optional>true</optional>
         </dependency>
         <dependency>
             <groupId>com.vaadin</groupId>

flow-plugins/flow-maven-plugin/src/it/commercial-banner-build/pom.xml

@@ -33,6 +33,8 @@
             <artifactId>flow-build-tools</artifactId>
             <version>${flow.version}</version>
             <classifier>shaded</classifier>
+            <scope>provided</scope>
+            <optional>true</optional>
         </dependency>
         <dependency>
             <groupId>com.vaadin</groupId>

flow-plugins/flow-maven-plugin/src/it/deps-with-classifier-dups-project/pom.xml

@@ -34,6 +34,8 @@
             <artifactId>flow-build-tools</artifactId>
             <version>${flow.version}</version>
             <classifier>shaded</classifier>
+            <scope>provided</scope>
+            <optional>true</optional>
         </dependency>
         <dependency>
             <groupId>com.vaadin</groupId>

flow-plugins/flow-maven-plugin/src/it/frontend-scanner-tuning-project/pom.xml

@@ -31,12 +31,6 @@
             <artifactId>flow-server</artifactId>
             <version>${flow.version}</version>
         </dependency>
-        <dependency>
-            <groupId>com.vaadin</groupId>
-            <artifactId>flow-build-tools</artifactId>
-            <version>${flow.version}</version>
-            <classifier>shaded</classifier>
-        </dependency>
         <dependency>
             <groupId>com.vaadin</groupId>
             <artifactId>flow-client</artifactId>

flow-plugins/flow-maven-plugin/src/it/ignore-maven-deps-from-project/pom.xml

@@ -34,6 +34,8 @@
             <artifactId>flow-build-tools</artifactId>
             <version>${flow.version}</version>
             <classifier>shaded</classifier>
+            <scope>provided</scope>
+            <optional>true</optional>
         </dependency>
         <dependency>
             <groupId>com.vaadin</groupId>

flow-plugins/flow-maven-plugin/src/it/plugin-pinned-deps-project/pom.xml

@@ -34,6 +34,8 @@
             <artifactId>flow-build-tools</artifactId>
             <version>${flow.version}</version>
             <classifier>shaded</classifier>
+            <scope>provided</scope>
+            <optional>true</optional>
         </dependency>
         <dependency>
             <groupId>com.vaadin</groupId>

flow-plugins/flow-maven-plugin/src/it/resources-from-project/pom.xml

@@ -33,6 +33,8 @@
             <artifactId>flow-build-tools</artifactId>
             <version>${flow.version}</version>
             <classifier>shaded</classifier>
+            <scope>provided</scope>
+            <optional>true</optional>
         </dependency>
         <dependency>
             <groupId>com.vaadin</groupId>