Alessandro/onboarding intro design review fixes

[alessandroboron]

Task/Issue URL: https://app.asana.com/0/72649045549333/1207736844779751/f CC: @SabrinaTardio

Description:

Fix BG1/ & BG2/ comments. I’ve also update the font size for iPad for landing screen which should be 36 instead of 28.

Steps to test this PR:

BG1/

1. Launch the Intro Flow
2. Look at the landing transition up to when the first dialog is presented to the user
3. Ensure that the there’s no transition for the background and looks like it’s not changing.

BG2/

1. Launch the Intro Flow
2. Check that the positioning of the clouds and mountains is close to the one specified in Figma Mockup iPad

<!— Before submitting a PR, please ensure you have tested the combinations you expect the reviewer to test, then delete configurations you know do not need explicit testing.

Using a simulator where a physical device is unavailable is acceptable. —>

Definition of Done (Internal Only):

• [ ] Does this PR satisfy our Definition of Done?

Copy Testing:

• [ ] Use of correct apostrophes in new copy, ie ’ rather than ’

Orientation Testing:

• [ ] Portrait
• [ ] Landscape

Device Testing:

• [ ] iPhone SE (1st Gen)
• [ ] iPhone 8
• [ ] iPhone X
• [ ] iPhone 14 Pro
• [ ] iPad

OS Testing:

• [ ] iOS 15
• [ ] iOS 16
• [ ] iOS 17

Theme Testing:

• [ ] Light theme
• [ ] Dark theme

—

Internal references:

Software Engineering Expectations Technical Design Template

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