Prior to this commit, event listener options were mutated directly, for example,
`options.signal = undefined`. This caused errors in libraries such as WalletConnect,
which pass an AbortController instance directly to `addEventListener` because it has
a `signal` property. The controller's `signal` property is a getter (which means it's
readonly) and cannot be mutated. Therefore, with this commit, we change the approach
from mutation to re-assignment.

Closes angular#54142

Prior to this commit, event listener options were mutated directly, for example,
`options.signal = undefined` or `options.once = false`.

This issue arises in apps using third-party libraries where the responsibility lies
with the library provider. Some libraries, like WalletConnect, pass an abort controller
as `addEventListener` options. Because the abort controller has the `signal` property,
this is a valid case. Thus, mutating options would throw an error since `signal`
is a readonly property.

Even though zone.js is being deprecated as Angular moves towards zoneless change detection,
this fix is necessary for apps that still use zone.js and cannot migrate to zoneless change
detection because they rely on third-party libraries and are not responsible for the code
used in them.

Closes angular#54142

Prior to this commit, event listener options were mutated directly, for example,
`options.signal = undefined` or `options.once = false`.

This issue arises in apps using third-party libraries where the responsibility lies
with the library provider. Some libraries, like WalletConnect, pass an abort controller
as `addEventListener` options. Because the abort controller has the `signal` property,
this is a valid case. Thus, mutating options would throw an error since `signal`
is a readonly property.

Even though zone.js is being deprecated as Angular moves towards zoneless change detection,
this fix is necessary for apps that still use zone.js and cannot migrate to zoneless change
detection because they rely on third-party libraries and are not responsible for the code
used in them.

Closes angular#54142

Prior to this commit, event listener options were mutated directly, for example,
`options.signal = undefined` or `options.once = false`.

This issue arises in apps using third-party libraries where the responsibility lies
with the library provider. Some libraries, like WalletConnect, pass an abort controller
as `addEventListener` options. Because the abort controller has the `signal` property,
this is a valid case. Thus, mutating options would throw an error since `signal`
is a readonly property.

Even though zone.js is being deprecated as Angular moves towards zoneless change detection,
this fix is necessary for apps that still use zone.js and cannot migrate to zoneless change
detection because they rely on third-party libraries and are not responsible for the code
used in them.

Closes angular#54142

Prior to this commit, event listener options were mutated directly, for example,
`options.signal = undefined` or `options.once = false`.

This issue arises in apps using third-party libraries where the responsibility lies
with the library provider. Some libraries, like WalletConnect, pass an abort controller
as `addEventListener` options. Because the abort controller has the `signal` property,
this is a valid case. Thus, mutating options would throw an error since `signal`
is a readonly property.

Even though zone.js is being deprecated as Angular moves towards zoneless change detection,
this fix is necessary for apps that still use zone.js and cannot migrate to zoneless change
detection because they rely on third-party libraries and are not responsible for the code
used in them.

Closes angular#54142

Prior to this commit, event listener options were mutated directly, for example,
`options.signal = undefined` or `options.once = false`.

This issue arises in apps using third-party libraries where the responsibility lies
with the library provider. Some libraries, like WalletConnect, pass an abort controller
as `addEventListener` options. Because the abort controller has the `signal` property,
this is a valid case. Thus, mutating options would throw an error since `signal`
is a readonly property.

Even though zone.js is being deprecated as Angular moves towards zoneless change detection,
this fix is necessary for apps that still use zone.js and cannot migrate to zoneless change
detection because they rely on third-party libraries and are not responsible for the code
used in them.

Closes angular#54142

…55796)

Prior to this commit, event listener options were mutated directly, for example,
`options.signal = undefined` or `options.once = false`.

This issue arises in apps using third-party libraries where the responsibility lies
with the library provider. Some libraries, like WalletConnect, pass an abort controller
as `addEventListener` options. Because the abort controller has the `signal` property,
this is a valid case. Thus, mutating options would throw an error since `signal`
is a readonly property.

Even though zone.js is being deprecated as Angular moves towards zoneless change detection,
this fix is necessary for apps that still use zone.js and cannot migrate to zoneless change
detection because they rely on third-party libraries and are not responsible for the code
used in them.

Closes #54142

PR Close #55796