build: update to latest MDC canary and fix error (#19389)

Bumps to the latest canary version of MDC and fixes a build error due to some code that was moved around.

Author: crisbeto

package.json

@@ -59,7 +59,7 @@
     "@types/youtube": "^0.0.38",
     "@webcomponents/custom-elements": "^1.1.0",
     "core-js": "^2.6.9",
-    "material-components-web": "7.0.0-canary.058cfd23c.0",
+    "material-components-web": "7.0.0-canary.4497b86ed.0",
     "rxjs": "^6.5.3",
     "systemjs": "0.19.43",
     "tslib": "^1.12.0",

src/material-experimental/mdc-form-field/BUILD.bazel

@@ -68,9 +68,6 @@ sass_library(
         "@npm//:node_modules/@material/notched-outline/mdc-notched-outline.scss",
         "@npm//:node_modules/@material/ripple/common.scss",
         "@npm//:node_modules/@material/textfield/_functions.scss",
-        "@npm//:node_modules/@material/textfield/character-counter/mdc-text-field-character-counter.scss",
-        "@npm//:node_modules/@material/textfield/helper-text/mdc-text-field-helper-text.scss",
-        "@npm//:node_modules/@material/textfield/icon/mdc-text-field-icon.scss",
         "@npm//:node_modules/@material/textfield/mdc-text-field.scss",
     ],
     deps = [