Add Copy Button and Fix Selection All Shortcuts in Modal

[WanjohiSammy]

PR Description:

Added a button to copy the content of the modal.
Fixed the Ctrl+A shortcut in standard mode to select only the modal content.
Fixed the Ctrl+Shift+A shortcut in Narrator mode to select only the modal content.

Ctrl+A is being intercepted by Narrator and cannot be programmatically handled correctly. However, when you turn on scan using CAPS + SPACE bar, use Ctrl +A to select the content in the modal.

https://www.odata.org/getting-started/understand-odata-in-6-steps/

Before

1. No Copy Button

2. Ctrl + A in standard mode and Narrator mode (selects everything in and outside the modal)

After

1. Copy Button Added

2. Ctrl + A in standard mode and Ctrl + A in Narrator mode + Scan mode (selects only the modal content)

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Files not reviewed (2)

• pages/getting-started/understand-odata-in-6-steps.html: Language not supported
• public/css/site.css: Language not supported

Copilot wasn't able to review any files in this pull request.

Files not reviewed (2)

• pages/getting-started/understand-odata-in-6-steps.html: Language not supported
• public/css/site.css: Language not supported