chore: run prettier on examples

[alicialics]

The basics

Run eslint on the following examples, this will result in no changes since there are no errors detected by eslint.
Run prettier on all examples. All changes in this PR comes from prettier.

examples/blockly-svelte
examples/custom-dialogs-demo
examples/custom-generator-codelab
examples/custom-renderer-codelab
examples/custom-tooltips-demo
examples/fixed-demo
examples/generator-demo
examples/graph-demo
examples/headless-demo
examples/keyboard-navigation-codelab
examples/max-blocks-demo
examples/mirror-demo
examples/resizable-demo
examples/rtl-demo
examples/sample-app
examples/single-direction-scroll-demo
examples/toolbox-demo

• I validated my changes

The details

Resolves

#1981

Proposed Changes

the ignored examples contains one or more eslint errors and so it's not tackled here

Reason for Changes

#1981

Test Coverage

N/A

Documentation

N/A

Additional Information

Svelte example is broken. I will open a separate PR
cc @maribethb

[maribethb]

Thanks for looking at this!

[maribethb]

I incorporated these commits into #2182 along with further updating examples based on current version of examples and prettier. Thanks for your work on this! Sorry this sat for a while.