Filters: Make behavior of "whole word" filters consistent with the web UI when filters are non-alphanumeric (#1623)

* Fix tests build

* Make behavior of non-alphanumeric whole-word filters consistent with the web UI.
Fixes #1543

* Fix typo in filter tests

app/src/androidTest/java/com/keylesspalace/tusky/TimelineDAOTest.kt

@@ -208,6 +208,7 @@ class TimelineDAOTest {
                 favouritesCount = 2 * statusId.toInt(),
                 reblogged = even,
                 favourited = !even,
+                bookmarked = false,
                 sensitive = even,
                 spoilerText = "spoier$statusId",
                 visibility = Status.Visibility.PRIVATE,
@@ -236,6 +237,7 @@ class TimelineDAOTest {
                 favouritesCount = 0,
                 reblogged = false,
                 favourited = false,
+                bookmarked = false,
                 sensitive = false,
                 spoilerText = null,
                 visibility = null,