PiT 24.4: remove deprecated API usage in starters

[manolo]

Describe the bug

There are a bunch of starters that are using deprecated API in 24.4

• [ ] business-app-starter-flow Deprecated API:

src/test/java/com/vaadin/starter/business/it/AccountsIT.java:[28,47] attributeContains(java.lang.String,java.lang.String) in com.vaadin.testbench.ElementQuery has been deprecated

• [ ] bookstore-example Deprecated API:

src/test/java/org/vaadin/example/crud/SampleCrudViewIT.java:[71,31] attribute(java.lang.String,java.lang.String) in com.vaadin.testbench.ElementQuery has been deprecated

• [ ] bookstore-example:rtl-demo Deprecated API:

src/test/java/org/vaadin/example/crud/SampleCrudViewIT.java:[71,31] attribute(java.lang.String,java.lang.String) in com.vaadin.testbench.ElementQuery has been deprecated

• [ ] bakery-app-starter-flow-spring Deprecated API:

src/test/java/com/vaadin/starter/bakery/testbench/elements/components/OrderCardElement.java:[11,56] attributeContains(java.lang.String,java.lang.String) in com.vaadin.testbench.ElementQuery has been deprecated
src/test/java/com/vaadin/starter/bakery/testbench/elements/components/OrderCardElement.java:[18,36] attributeContains(java.lang.String,java.lang.String) in com.vaadin.testbench.ElementQuery has been deprecated
src/test/java/com/vaadin/starter/bakery/testbench/elements/ui/OrderItemEditorElement.java:[27,59] attribute(java.lang.String,java.lang.String) in com.vaadin.testbench.ElementQuery has been deprecated

Expected-behavior

no usage of deprecated

Reproduction

.

System Info

V 24.4.0.beta2

[ZheSun88]

this deprecation has been introduced since Vaadin testbench 9.3.0.alpha1

at this moment, we cannot update the starters' v24 branch to use it, as they are still using Vaadin 24.3.x we will revisit those after v24.4.0 got released.

[ZheSun88]

https://github.com/vaadin/business-app-starter-flow/pull/364 https://github.com/vaadin/bookstore-example/pull/337 https://github.com/vaadin/bookstore-example/pull/338 https://github.com/vaadin/bakery-app-starter-flow-spring/pull/1357

[ZheSun88]

merged PRs, tested one with https://github.com/vaadin/platform/actions/runs/9495138942