targetPage was return currentPage even if currentPageOffset was negat…

…ive (#712)

* targetPage was return currentPage even if currentPageOffset was negative

* Update fix to not create an IntRange every call

Co-authored-by: Chris Banes <chrisbanes@users.noreply.github.com>

pager/src/main/java/com/google/accompanist/pager/PagerState.kt

@@ -265,7 +265,7 @@ class PagerState(
             // If a scroll isn't in progress, return the current page
             !isScrollInProgress -> currentPage
             // If the offset is 0f (or very close), return the current page
-            currentPageOffset < 0.001f -> currentPage
+            currentPageOffset.absoluteValue < 0.001f -> currentPage
             // If we're offset towards the start, guess the previous page
             currentPageOffset < 0 -> (currentPage - 1).coerceAtLeast(0)
             // If we're offset towards the end, guess the next page