First batch: remove deprecated calls on MatrixClient (#28207)

* Remove `initCrypto` mocking

* Remove `MatrixClient.downloadKeys` mocking

* Remove `MatrixClient.getStoredDevice` mocking

* Replace `MatrixClient.setGlobalBlacklistUnverifiedDevices` by `MatrixClient.CryptoApi.globalBlacklistUnverifiedDevices`

* Remove `MatrixClient.getStoredCrossSigningForUser` mocking

* Replace `MatrixClient.legacyDeviceVerification` by `MatrixClient.CryptoApi.requestDeviceVerification`

* Remove `MatrixClient.isCrossSigningReady` mock

* Replace `MatrixClient.bootstrapCrossSigning` by `MatrixClient.getCrypto.bootstrapCrossSigning`

* Replace `MatrixClient.getCryptoTrustCrossSignedDevices` by `MatrixClient.getCrypto.getTrustCrossSignedDevices`

* Replace `MatrixClient.hasSecretStorageKey` by `MatrixClient.SecretStorage.hasKey`

* Replace `MatrixClient.getDefaultSecretStorageKeyId` by `MatrixClient.SecretStorage.getDefaultKeyId`

* Remove `MatrixClient.encryptAndSendToDevices` call

src/verification.ts

@@ -7,7 +7,6 @@ Please see LICENSE files in the repository root for full details.
 */
 
 import { User, MatrixClient, RoomMember } from "matrix-js-sdk/src/matrix";
-import { VerificationMethod } from "matrix-js-sdk/src/types";
 import { CrossSigningKey, VerificationRequest } from "matrix-js-sdk/src/crypto-api";
 
 import dis from "./dispatcher/dispatcher";
@@ -39,7 +38,7 @@ export async function verifyDevice(matrixClient: MatrixClient, user: User, devic
         return;
     }
     // if cross-signing is not explicitly disabled, check if it should be enabled first.
-    if (matrixClient.getCryptoTrustCrossSignedDevices()) {
+    if (matrixClient.getCrypto()?.getTrustCrossSignedDevices()) {
         if (!(await enable4SIfNeeded(matrixClient))) {
             return;
         }
@@ -50,11 +49,9 @@ export async function verifyDevice(matrixClient: MatrixClient, user: User, devic
         device,
         onFinished: async (action): Promise<void> => {
             if (action === "sas") {
-                const verificationRequestPromise = matrixClient.legacyDeviceVerification(
-                    user.userId,
-                    device.deviceId,
-                    VerificationMethod.Sas,
-                );
+                const verificationRequestPromise = matrixClient
+                    .getCrypto()
+                    ?.requestDeviceVerification(user.userId, device.deviceId);
                 setRightPanel({ member: user, verificationRequestPromise });
             } else if (action === "legacy") {
                 Modal.createDialog(ManualDeviceKeyVerificationDialog, {