release-2025-06-20: Warning banner and preparations for v2

This is Internet Identity release release-2025-06-20 for commit 818779c444cebc8dbf63e22ff2cf89e688523f69.
The sha256 of production asset internet_identity_production.wasm.gz is 6eb7116197374d30663022cd82909e93545124f07864a41beb2514e3cf6533bc.

What's Changed

• Fix navigation animation, use identity number instead of object as key. by @sea-snake in #3125
• Design changes based on feedback by @sea-snake in #3126
• Implement dummy auth feature flag in new design flow. by @sea-snake in #3111
• Add marquee banner warning about scheduled downtime by @LXIF in #3122
• Enable dummy auth through canister config by @sea-snake in #3127
• Temporarily configure sveltekit to create a single JS bundle by @sea-snake in #3128
• Implement E2E tests for all possible new authorization flows. by @sea-snake in #3110
• Add custom error page for boundary node by @LXIF in #3129
• Move auth flow out of components by @sea-snake in #3130
• add try-ii to repo by @LXIF in #3131
• Implement protocol error screens by @sea-snake in #3132

Full Changelog: release-2025-06-14-v2...release-2025-06-20

Build flavors

For more information please see the Build flavors section of the README.

Filename	sha256 (links to CI Run)
internet_identity_production.wasm.gz	6eb7116197374d30663022cd82909e93545124f07864a41beb2514e3cf6533bc
internet_identity_dev.wasm.gz	ff4771c148635942414bd5746f5ca913cc7b930dc98f7d8a5a4f8e9cee8a306e
internet_identity_test.wasm.gz	2570e69c63c0c8d6641a792e0978e7269b4ed38bb9dd53f4463ffd5b91a69d61
archive.wasm.gz	914667c0e35944385851a3b031bcf5a4c56aa085c06f9c6ca3d84cedfb95dc0b
vc_demo_issuer.wasm.gz	c5598ef8506aab8a26e7cb6061f7508da593edb63842011dbd09134a9195134c

Wasm Verification

To build the wasm modules yourself and verify their hashes, run the following commands from the root of the Internet Identity repository:

git pull # to ensure you have the latest changes.
git checkout 818779c444cebc8dbf63e22ff2cf89e688523f69
./scripts/verify-hash --ii-hash 6eb7116197374d30663022cd82909e93545124f07864a41beb2514e3cf6533bc --archive-hash 914667c0e35944385851a3b031bcf5a4c56aa085c06f9c6ca3d84cedfb95dc0b

Make sure to compare the hashes also with the proposal payload when verifying canister upgrade proposals.